Works (205)

Updated: April 4th, 2024 17:15

2023 article

Acryloyl esters of emodin for waterless dyeing and toxicological studies

Magalhaes, G. R., Militao, G. F. G., Farias, N. O., Albuquerque, A. F., Botelho, M. T., Raisanen, R., … Aragao Umbuzeiro, G. (2023, October 12). COLORATION TECHNOLOGY.

By: G. Magalhaes*, G. Militao*, N. Farias*, A. Albuquerque*, M. Botelho*, R. Raisanen*, H. Freeman n, G. Aragao Umbuzeiro*

TL;DR: It is found that emodin can be derivatized using acryloyl chlorides to give mono‐ and di‐acrylate esters suitable for dyeing polyester fibers in sc‐CO2, but the new dyes do not appear to be viable alternatives from the point of view of preserving human and environmental health. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: October 30, 2023

2023 journal article

Pomegranate peel extract and zinc oxide as a source of natural dye and functional material for textile fibers aiming for photoprotective properties

MATERIALS CHEMISTRY AND PHYSICS, 293.

author keywords: Natural dye; Pomegranate peels; Zinc oxide; Photoprotection; Ellagic acid; Cotton
Source: Web Of Science
Added: November 28, 2022

2022 journal article

Copaifera langsdorffii Desf. bark extract: optimisation of dyeing conditions to wool and colour fastness properties

NATURAL PRODUCT RESEARCH, 36(14), 3744–3749.

By: P. Silva*, V. Franca*, R. Queiroz*, F. Lima*, H. Freeman n, S. Costa*, S. Costa

author keywords: Natural dyeing; bark extract; wool; full factorial design; textile dyeing; colour fastness
MeSH headings : Animals; Color; Coloring Agents / chemistry; Coloring Agents / isolation & purification; Fabaceae / chemistry; Plant Bark / chemistry; Plant Extracts / chemistry; Plant Extracts / isolation & purification; Radiation Protection / methods; Radiation Protection / standards; Spectrophotometry; Temperature; Textiles; Time Factors; Ultraviolet Rays; Wool / chemistry; Wool / metabolism
TL;DR: The objective of the present work was to expand developments in this arena by using Copaifera langsdorffii Desf. (via Semantic Scholar)
Source: Web Of Science
Added: February 8, 2021

2022 journal article

Evaluation of the Toxicological and Color Properties of Anionic Hydrophobic Monoazo Dyes for Sustainable Human Hair Coloration

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 10(8), 2593–2601.

By: T. Williams n, F. Vacchi*, A. Santos*, M. Szymczyk n, G. Umbuzeiro* & H. Freeman n

author keywords: aquatic toxicity; azo dyes; hair dyes; hydrophobic dyes; mutagenicity; sustainability
Sources: Web Of Science, NC State University Libraries, ORCID
Added: March 28, 2022

2022 journal article

Isomeric tetrazole-based organic dyes for dye-sensitized solar cells: Structure-property relationships

JOURNAL OF MOLECULAR STRUCTURE, 1250.

By: L. Silva, M. Sanchez*, M. Ibarra-Rodriguez* & H. Freeman n

author keywords: Dye-sensitized solar cell; Co-adosrbent; Tetrazole
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: November 29, 2021

2022 journal article

Metal-complexed monoazo dyes as sustainable permanent hair dye alternatives-Toxicological and durability properties

DYES AND PIGMENTS, 197.

By: T. Williams n, F. Vacchi*, A. Santos*, G. AragaUmbuzeiro & H. Freeman n

author keywords: Aquatic toxicity; Hair dyes; Metal-complexed dyes; Mutagenicity; Sustainability
Sources: Web Of Science, ORCID, NC State University Libraries
Added: October 5, 2021

2022 journal article

Molecular and excited state properties of photostable anthraquinone red and violet dyes for hydrophobic fibers

JOURNAL OF MOLECULAR STRUCTURE, 1248.

By: Y. Ding*, M. Szymczyk n, N. Mehraban n, J. Lim*, L. Parrillo-Chapman n, A. El-Shafei n, H. Freeman n

author keywords: Anthraquinone disperse dyes; Photostability; Intramolecular H-bonding; Structural analysis; X-ray crystallography; Molecular modelling
Source: Web Of Science
Added: October 18, 2021

2022 article

Mutagenicity of dyes: a call to fill the knowledge gaps and improve our predictive ability

Aragao Umbuzeiro, G., Freeman, H. S., & Raisanen, R. (2022, September 1). TOXICOLOGY LETTERS, Vol. 368, pp. S73–S73.

By: G. Aragao Umbuzeiro*, H. Freeman* & R. Raisanen

Source: Web Of Science
Added: September 29, 2022

2022 journal article

Waterless Dyeing and In Vitro Toxicological Properties of Biocolorants from Cortinarius sanguineus

JOURNAL OF FUNGI, 8(11).

By: M. Herrala*, J. Yli-oyra*, A. Albuquerque*, N. Farias*, D. Morales*, R. Raisanen*, H. Freeman n, G. Umbuzeiro*, J. Rysa*

author keywords: bloodred webcap; dermocybin; dermorubin; emodin; fungal colorants; supercritical CO2; toxicity; waterless dyeing
TL;DR: The results indicate that dermocybin and dermorubin possess the technical and toxicological properties needed for consideration as synthetic dye alternatives under conditions that are free of wastewater production. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: November 21, 2022

2021 journal article

A fungal-based anthraquinone emodin for polylactide and polyethylene terephthalate in supercritical carbon dioxide (SC-CO2) dyeing

COLOR RESEARCH AND APPLICATION, 46(3), 674–680.

By: R. Raisanen*, G. Montero & H. Freeman n

author keywords: anthraquinone; biocolourant; polyester PET; polylactide PLA; supercritical carbon dioxide dyeing
Source: Web Of Science
Added: February 22, 2021

2021 journal article

A promising Ames battery for mutagenicity characterization of new dyes

ENVIRONMENTAL AND MOLECULAR MUTAGENESIS, 62(1), 52–65.

By: G. Umbuzeiro n, D. Morales*, F. Vacchi*, A. Albuquerque*, M. Szymczyk n, X. Sui n, N. Vinueza n, H. Freeman n

Contributors: G. Umbuzeiro n, D. Morales*, F. Vacchi*, A. Albuquerque*, M. Szymczyk n, X. Sui n, N. Vinueza n, H. Freeman n

author keywords: anthraquinones; azo dyes; microplate agar; Salmonella; microsome assay
MeSH headings : Coloring Agents / adverse effects; Coloring Agents / chemistry; Molecular Conformation; Mutagenesis / drug effects; Mutagenicity Tests / methods; Mutagens / adverse effects; Mutagens / chemistry; Salmonella typhimurium / drug effects; Salmonella typhimurium / genetics; Solubility
TL;DR: It is proposed that dyes should be tested in a tiered approach using YG1041 followed by TA97a, TA98, and TA100 in concentration‐response experiments, which provides additional information on the dye mutagenicity database available in the literature. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: January 4, 2021

2021 journal article

Characterization of the photophysics of a mixed system of red disperse dyes using experimental and theoretical methods

DYES AND PIGMENTS, 184.

By: B. Kim n, E. Danilov n, S. Yoon*, A. El-Shafei n & H. Freeman n

Contributors: B. Kim n, E. Danilov n, S. Yoon*, A. El-Shafei n & H. Freeman n

author keywords: Disperse dyes; Photophysics; Transient absorption spectroscopy; Photostability; Tautomer; DFT calculations
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: December 11, 2020

2021 journal article

In situ Chelation of Monoazo Dyes in Human Hair Keratin Fibers Using Environmentally Benign Metal Ions

ACS Applied Bio Materials, 4(8), 6195–6202.

By: T. Williams n, M. Szymczyk n & H. Freeman n

author keywords: azo dyes; chelation; hair dyeing; keratin fibers; metal ions; sustainability
MeSH headings : Cytoskeletal Proteins / analysis; Hair / chemistry; Hair Dyes / analysis; Humans; Hydrogen Peroxide / analysis; Ions / analysis; Keratins, Hair-Specific / analysis; Metals / analysis
Sources: Web Of Science, ORCID, NC State University Libraries
Added: September 20, 2021

2021 article

Molecular characterization and ecotoxicological evaluation of the natural dye madder and its chlorinated products

Freeman, H. S., Santos, T. C., Chen, Y., Vendemiatti, J. A. S., Oliveira, A. C., Vacchi, F. I., … Umbuzeiro, G. A. (2021, November 25). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, Vol. 11.

By: H. Freeman n, T. Santos n, Y. Chen n, J. Vendemiatti*, A. Oliveira*, F. Vacchi*, N. Vinueza n, G. Umbuzeiro*

author keywords: Natural dye; Madder; Decolorization; Chlorination products; Mass spectrometry; Ecotoxicity; Daphnia similis; Raphidocellis subcapitata
MeSH headings : Animals; Coloring Agents / toxicity; Daphnia; Textile Industry; Textiles; Wastewater; Water Pollutants, Chemical / analysis
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: December 20, 2021

2021 journal article

Reuse of water from real reactive monochromic and trichromic wastewater for new cotton dyes after efficient treatment using H2O2 catalyzed by UV light

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 9(4).

By: K. Hipolito Bezerra, T. Fiaschitello*, G. Labuto*, H. Freeman n, W. Fragoso*, S. Costa*, S. Costa*

author keywords: Cycles of reuse; Wastewater; Reactive dyes; Trichromy; UV light; Hydrogen peroxide
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: July 19, 2021

2021 journal article

X-ray photoelectron spectroscopy study on the photodegradation of copolyester model compounds

JOURNAL OF APPLIED POLYMER SCIENCE, 138(2).

By: K. Arangdad n, E. Yildirim n, A. Detwiler*, C. Cleven*, C. Burk*, R. Shamey n, M. Pasquinelli n, H. Freeman n, A. El-Shafei n

Contributors: K. Arangdad n, E. Yildirim n, A. Detwiler*, C. Cleven*, C. Burk*, R. Shamey n, M. Pasquinelli n, H. Freeman n, A. El-Shafei n

author keywords: ageing; degradation; theory and modeling
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 10, 2020

2020 journal article

Molecular and excited state properties of photostable yellow disperse dyes

JOURNAL OF MOLECULAR STRUCTURE, 1207.

By: Y. Ding*, M. Szymczyk n, N. Mehraban n, J. Lim*, L. Parrillo-Chapman n, A. El-Shafei n, H. Freeman n

Contributors: Y. Ding*, M. Szymczyk n, N. Mehraban n, J. Lim*, L. Parrillo-Chapman n, A. El-Shafei n, H. Freeman n

author keywords: Calculated energy values; Azo-anthraquinone homologs; ESI-MS analysis; X-ray crystal structure; HOMO-LUMO overlap
Sources: Web Of Science, ORCID
Added: April 6, 2020

2020 journal article

Natural dye from Croton urucurana Baill. bark: Extraction, physicochemical characterization, textile dyeing and color fastness properties

DYES AND PIGMENTS, 173.

By: P. Santos Silva*, T. Fiaschitello*, R. Queiroz*, H. Freeman n, S. Costa*, P. Leo*, A. Montemor*, S. Costa*

author keywords: Natural dyeing; Natural extract; Cotton; Wool; Full factorial design; Wastewater analysis
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: January 6, 2020

2020 journal article

New tetrazole based dyes as efficient co-sensitizers for dsscs: Structure-properties relationship

ORGANIC ELECTRONICS, 87.

By: L. Silva, M. Sanchez* & H. Freeman n

author keywords: Dye-sensitized solar cells; Co-adsorbent; Tetrazole
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: December 21, 2020

2020 journal article

Toward closed loop recycling of polyester fabric: Step 1. decolorization using sodium formaldehyde sulfoxylate

JOURNAL OF CLEANER PRODUCTION, 254.

By: X. Fei n, H. Freeman n & D. Hinks n

Source: Web Of Science
Added: June 1, 2020

2019 journal article

Analysis of keratin films as screening tools for predicting the efficacy of potential hair dyes

COLORATION TECHNOLOGY, 135(4), 253–266.

By: T. Williams n & H. Freeman n

Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 5, 2019

2019 journal article

Approach to Waterless Dyeing of Textile Substrates-Use of Atmospheric Plasma

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 58(40), 18478–18487.

By: S. Zaidy n, F. Vacchi*, G. Umbuzeiro n & H. Freeman n

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: October 28, 2019

2019 journal article

Influence of UV stabilizers on the weathering of PETG and PCTT films

JOURNAL OF APPLIED POLYMER SCIENCE, 136(47).

By: K. Arangdad n, E. Yildirim n, A. Detwiler*, C. Cleven*, C. Burk*, R. Shamey n, M. Pasquinelli n, H. Freeman n, A. El-Shafei n

Contributors: K. Arangdad n, E. Yildirim n, A. Detwiler*, C. Cleven*, C. Burk*, R. Shamey n, M. Pasquinelli n, H. Freeman n, A. El-Shafei n

author keywords: cyclic voltammetry; DFT calculation; gel permeation chromatography; Fourier transform infrared spectroscopy; photodegradation; UV stabilizers; X-ray photoelectron spectroscopy
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 5, 2019

2019 journal article

Molecular and excited state properties of photostable anthraquinone blue dyes for hydrophobic fibers

Journal of Molecular Structure, 1181, 109–117.

By: Y. Ding n, N. Mehraban n, M. Szymczyk n, L. Parrillo-Chapman n, A. El-Shafei n & H. Freeman n

Contributors: Y. Ding n, N. Mehraban n, M. Szymczyk n, L. Parrillo-Chapman n, A. El-Shafei n & H. Freeman n

author keywords: Anthraquinone disperse dyes; Intramolecular H-bonding; Structural analysis; X-ray crystallography; Molecular modelling
Sources: Web Of Science, Crossref, ORCID
Added: March 4, 2019

2019 journal article

Pretreatment effects on pigment-based textile inkjet printing - colour gamut and crockfastness properties

COLORATION TECHNOLOGY, 135(1), 77–86.

By: Y. Ding n, R. Shamey n, L. Chapman n & H. Freeman n

Sources: Web Of Science, ORCID, NC State University Libraries
Added: February 4, 2019

2019 journal article

Synthesis and Encapsulation of a New Zinc Phthalocyanine Photosensitizer into Polymeric Nanoparticles to Enhance Cell Uptake and Phototoxicity

APPLIED SCIENCES-BASEL, 9(3).

By: N. Mehraban n, P. Musich* & H. Freeman n

author keywords: PDT photosensitizer; phthalocyanine derivative; PLGA-b-PEG nanoparticles; phototoxicity
TL;DR: This work used PLGA-b-PEG to encapsulate a new zinc phthalocyanine derivative, 2(3), 9(10), 16(17), 23(24)-tetrakis-(4’-methyl-benzyloxy) phthalcyanine zinc(II) (ZnPcBCH3), to enhance uptake into A549 cells, a human lung cancer cell line. (via Semantic Scholar)
Source: Web Of Science
Added: March 18, 2019

2019 journal article

Towards a reliable prediction of the aquatic toxicity of dyes

ENVIRONMENTAL SCIENCES EUROPE, 31(1).

By: G. Umbuzeiro*, A. Albuquerque*, F. Vacchi*, M. Szymczyk n, X. Sui n, R. Aalizadeh*, P. Ohe, N. Thomaidis*, N. Vinueza n, H. Freeman n

Contributors: G. Umbuzeiro*, A. Albuquerque*, F. Vacchi*, M. Szymczyk n, X. Sui n, R. Aalizadeh*, P. Ohe, N. Thomaidis*, N. Vinueza n, H. Freeman n

author keywords: Azo dyes; Anthraquinone dyes; ACO-SVM model; QSAR; MWDL; Daphnia
TL;DR: A good prediction capacity is observed for the 10 of the 15 tested dyes of the MWDL, but more dyes should be tested to extend the existing training set with similar dyes, to obtain a reliable prediction model that is applicable to the full MWDL. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 21, 2019

2019 journal article

Variation in hydrophobic chain length of co-adsorbents to improve dye-sensitized solar cell performance

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 21(30), 16771–16778.

By: L. Silva* & H. Freeman n

TL;DR: Three compounds based on the phenyltetrazole system were synthesized and characterized as co-adsorbents in dye-sensitized solar cells (DSSCs) and it is possible that the more compact layer formed improves electron-injection efficiency into TiO2. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 19, 2019

2018 journal article

A study of the effects of fabric pretreatment on color gamut from inkjet printing on polyester

JOURNAL OF THE TEXTILE INSTITUTE, 109(9), 1143–1151.

By: Y. Ding n, L. Parrillo-Chapman n & H. Freeman n

author keywords: Polyester; inkjet printing; pretreatment; color gamut; ink limit
Source: Web Of Science
Added: August 6, 2018

2018 article

Data from X-ray crystallographic analysis and DFT calculations on isomeric azo disperse dyes

Lim, J., Szymczyk, M., Mehraban, N., Ding, Y., Parrillo-Chapman, L., El-Shafei, A., & Freeman, H. S. (2018, December). DATA IN BRIEF, Vol. 21, pp. 675–683.

By: J. Lim n, M. Szymczyk n, N. Mehraban n, Y. Ding n, L. Parrillo-Chapman n, A. El-Shafei n, H. Freeman n

Contributors: J. Lim n, M. Szymczyk n, N. Mehraban n, Y. Ding n, L. Parrillo-Chapman n, A. El-Shafei n, H. Freeman n

TL;DR: X-ray crystallography and DFT calculations were used to characterize the molecular nature and excited state properties of isomeric photostable azo dyes for textile fibers undergoing extensive sunlight exposure. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: February 25, 2019

2018 journal article

Developing the methodology of colour gamut analysis and print quality evaluation for textile ink-jet printing: Delphi method

COLORATION TECHNOLOGY, 134(2), 135–147.

By: Y. Ding n, L. Parrillo-Chapman n & H. Freeman n

TL;DR: An industry initiative toward the improvement of CMS for more accurate colour matching, a need to stabilise variables in the manufacturing process, and a needs to standardise related tests and evaluations are uncovered. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2018 journal article

Dimerised heterobifunctional reactive dyes. Part 1: characterisation using quadrupole time-of-flight mass spectrometry

Coloration Technology, 134(6), 470–477.

By: N. Sultana n, Y. Liu n, M. Szymczyk n, H. Freeman n & N. Vinueza n

UN Sustainable Development Goal Categories
Sources: Web Of Science, Crossref, NC State University Libraries
Added: December 17, 2018

2018 journal article

Molecular and excited state properties of isomeric scarlet disperse dyes

JOURNAL OF MOLECULAR STRUCTURE, 1161, 254–261.

By: J. Lim n, M. Szymczyk n, N. Mehraban n, Y. Ding n, L. Parrillo-Chapman n, A. El-Shafei n, H. Freeman n

Contributors: J. Lim n, M. Szymczyk n, N. Mehraban n, Y. Ding n, L. Parrillo-Chapman n, A. El-Shafei n, H. Freeman n

author keywords: Intramolecular H-bonding; Electron transfer; Photostability; X-ray crystallography; Azo disperse dyes; Structural isomers
Sources: Web Of Science, ORCID
Added: August 6, 2018

2018 journal article

Toward the Rational Design of Sustainable Hair Dyes Using Cheminformatics Approaches: Step 1. Database Development and Analysis

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 6(2), 2344–2352.

By: T. Williams n, M. Kuenemann n, G. Driessche n, A. Williams*, D. Fourches n & H. Freeman n

author keywords: Cheminformatics; Hair dyes; HDSD; Mutagenicity; Skin sensitization; Sustainability
Sources: Web Of Science, ORCID
Added: August 6, 2018

2018 journal article

Toward the Rational Design of Sustainable Hair Dyes Using Cheminformatics Approaches: Step 2. Identification of Hair Dye Substance Database Analogs in the Max Weaver Dye Library

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 6(11), 14248–14256.

By: T. Williams n, G. Driessche n, A. Valery n, D. Fourches n & H. Freeman n

author keywords: Cheminformatics; Hair dyes; Hair Dye Substance Database; Max Weaver Dye Library; Skin sensitization; Sustainability
Sources: Web Of Science, ORCID
Added: December 3, 2018

2017 journal article

Color Gamut Analysis and Color Fastness Evaluation for Textile Inkjet Printing Application on Polyester

JOURNAL OF IMAGING SCIENCE AND TECHNOLOGY, 61(5).

By: Y. Ding, H. Freeman* & L. Parrillo-Chapman

Source: Web Of Science
Added: August 6, 2018

2017 journal article

Mordant dye application on cotton: optimisation and combination with natural dyes

COLORATION TECHNOLOGY, 133(5), 369–375.

By: Y. Ding n & H. Freeman n

Source: Web Of Science
Added: August 6, 2018

2017 journal article

Waste from eucalyptus wood steaming as a natural dye source for textile fibers

JOURNAL OF CLEANER PRODUCTION, 143, 303–310.

By: T. Rossi*, P. Silva*, L. De Moura*, M. Araujo*, J. Brito* & H. Freeman n

author keywords: Eucalyptus extract; Textile dyeing; Wash fastness; Light fastness; Natural dyeing
Source: Web Of Science
Added: August 6, 2018

2017 journal article

Weaver's historic accessible collection of synthetic dyes: a cheminformatics analysis

CHEMICAL SCIENCE, 8(6), 4334–4339.

Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Characterization of non-genotoxic diarylides using experimental and molecular orbital methods

DYES AND PIGMENTS, 121, 128–137.

By: A. El-Shafei n, D. Hinks n, P. Boyle* & H. Freeman n

Contributors: A. El-Shafei n, D. Hinks n, P. Boyle* & H. Freeman n

author keywords: X-ray structure; MO calculations; NMR spectroscopy; Torsion angles; Diarylides; Solid state spectra
Sources: Web Of Science, ORCID
Added: August 6, 2018

2015 review

Developments in PDT Sensitizers for Increased Selectivity and Singlet Oxygen Production

[Review of ]. MATERIALS, 8(7), 4421–4456.

By: N. Mehraban n & H. Freeman n

author keywords: photodynamic therapy; tumor selectivity; photosensitizer; polymeric micelles; singlet oxygen production; amphiphilic; drug delivery; nanoparticles; triplet photosensitizer
TL;DR: Methods employed to increase 1O2 production efficiency are covered, including the design of two-photon absorbing sensitizers and triplet forming cyclometalated Ir(III) complexes. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2015 journal article

One-Step Pad Dyeing and DP Finishing of Cotton: Part 1. Reactive Dyes with DMDHEU

AATCC JOURNAL OF RESEARCH, 2(3), 6–12.

By: S. Li*, H. Freeman*, H. Boyter* & L. Qian*

author keywords: Cotton; DMDHEU; Durable Press; Dyeing; Finishing; Fixation; Reactive Dyes
Source: Web Of Science
Added: August 6, 2018

2015 journal article

One-Step Pad Dyeing and DP Finishing of Cotton: Part 2. Mechanism of Dye Fixation Using DMDHEU

AATCC JOURNAL OF RESEARCH, 2(3), 13–20.

By: S. Li n, H. Freeman n & H. Boyter n

author keywords: Cotton; DMDHEU; Durable Press; Dyeing; Finishing; Fixation; Reactive Dyes
Source: Web Of Science
Added: August 6, 2018

2015 journal article

Potential of a bacterial consortium to degrade azo dye Disperse Red 1 in a pilot scale anaerobic-aerobic reactor

PROCESS BIOCHEMISTRY, 50(5), 816–825.

By: E. Franciscon*, D. Mendonca*, S. Seber*, D. Morales*, G. Zocolo, M. Zanoni, M. Grossman*, L. Durrant*, H. Freeman n, G. Umbuzeiro*

author keywords: Disperse Red 1; Bioreactor; Biodegradation; Microbial consortium; Metabolites; Toxicity
TL;DR: Results indicate the bacterial consortium was effective in biodegrading Disperse Red 1 and also reducing the toxicity and mutagenicity and may represent a promising application for dyes biodegradation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2015 journal article

Synthesis and X-ray analysis of a perfluoroalkyl-substituted azobenzene dye

DYES AND PIGMENTS, 120, 245–250.

By: L. He n, H. Freeman n, M. Nakpathom n & P. Boyle n

author keywords: Perfluoroalkylazo dye; Aminoazobenzene dye; X-ray diffraction; Crystal structure; Torsion angle; Surface energy
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2013 journal article

Aromatic amines: use in azo dye chemistry

FRONTIERS IN BIOSCIENCE-LANDMARK, 18, 145–164.

By: H. Freeman*

author keywords: Aromatic amines; azo dyes; diazo coupling; light fastness; genotoxicity; molecular design; basicity; synthesis; Review
MeSH headings : Amines / chemistry; Azo Compounds / chemistry; Cellulose / chemistry; Coloring Agents / chemical synthesis; Coloring Agents / chemistry; Cotton Fiber; Mutagens
TL;DR: This chapter provides an overview of the chemical structures and properties of aromatic amine and their role in the development and utility of azo dyes and approaches to the design of environmentally benign alternatives to genotoxic primary aromatic amines, as azo dye precursors. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2013 journal article

Characterization of metabolites of genotoxic 4,4 '-aminoalkoxyazobenzene dyes

DYES AND PIGMENTS, 99(2), 496–501.

By: H. Freeman*, E. Jeong* & L. Claxton*

author keywords: Diaminoalkoxyazobenzene dyes; Metabolites; N-dehydroxyethylation; O-deacetylation; Reductive cleavage
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2013 journal article

Chlorine disinfection of dye wastewater: Implications for a commercial azo dye mixture

SCIENCE OF THE TOTAL ENVIRONMENT, 442, 302–309.

By: F. Vacchi*, A. Albuquerque*, J. Vendemiatti*, D. Morales*, A. Ormond n, H. Freeman n, G. Zocolo*, M. Boldrin Zanoni*, G. Umbuzeiro*

author keywords: CI Disperse Red 1; Chlorination; Commercial dye mixture; LC-MS; Daphnia; Salmonella/microsome assay
MeSH headings : Animals; Azo Compounds / analysis; Azo Compounds / toxicity; Chlorine / chemistry; Chromatography, High Pressure Liquid; Coloring Agents / analysis; Coloring Agents / toxicity; Daphnia / drug effects; Disinfection / methods; Spectrometry, Mass, Electrospray Ionization; Tandem Mass Spectrometry; Toxicity Tests, Acute; Wastewater / analysis; Wastewater / toxicity; Water Pollutants, Chemical / analysis; Water Pollutants, Chemical / toxicity; Water Purification / methods
TL;DR: The results of this study indicated that chlorination of Disperse Red 1 produced four chlorinated aromatic compounds as the main products and that the degradation products were more ecotoxic than the parent dye. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2013 journal article

Design, Synthesis, and Pharmacological Screening of Novel Porphyrin Derivatives

JOURNAL OF CHEMISTRY, 2013.

By: A. Fadda*, R. El-Mekawy*, A. El-Shafei n, H. Freeman n, D. Hinks n & A. El-Fedawy*

Contributors: A. Fadda*, R. El-Mekawy*, A. El-Shafei n, H. Freeman n, D. Hinks n & M. El-Fedawy*

TL;DR: It was demonstrated that these dyes were effective in the inhibition of the free radical-induced oxidative haemolysis of rat blood cells and excellent correlation between the LUMO energy and cytotoxicity of dyes 2a–f was found. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2013 review

Dye Sensitizers for Photodynamic Therapy

[Review of ]. MATERIALS, 6(3), 817–840.

By: A. Ormond n & H. Freeman n

author keywords: photodynamic therapy; photosensitizers; porphyrins; clinical trials; target organs
TL;DR: The nature of PDT, dye sensitizers that have been approved for use in PDT, and compounds that have entered or completed clinical trials as PDT sensitizer are focused on. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2013 journal article

Effects of bis-carbazole based D-pi-A sensitizers on solar energy capture in DSSCs

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, 12(3), 421–431.

By: B. Kim n & H. Freeman n

TL;DR: Results from assessing the effects of different heterocyclic rings, as a π conjugation unit on photovoltaic performance showed that the thiophene unit gave the highest current, while CA- and DP-based dyes having an N-methyl pyrrole unit afforded the highest V(oc). (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2013 journal article

Effects of substituents on the photophysical properties of symmetrical porphyrins

DYES AND PIGMENTS, 96(2), 440–448.

By: A. Ormond n & H. Freeman n

author keywords: Porphyrins; Singlet oxygen; Quantum yield; Fluorescence lifetime; Spectroscopy; Stokes shift
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2013 journal article

New N-methyl pyrrole and thiophene based D-pi-A systems for dye-sensitized solar cells

DYES AND PIGMENTS, 96(2), 313–318.

By: B. Kim n & H. Freeman n

author keywords: DSSCs; Heterocyclic spacers; Recombination lifetime; D-pi-A system; IPCE; TiO2 film
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2013 journal article

Synthesis and Pharmacological Screening of Novel meso-Substituted Porphyrin Analogs

ARCHIV DER PHARMAZIE, 346(1), 53–61.

By: A. Fadda*, R. El-Mekawy*, A. El-Shafei n & H. Freeman n

Contributors: A. Fadda*, R. El-Mekawy*, A. El-Shafei n & H. Freeman n

author keywords: Antioxidant; Cytotoxic and hemolysis activities; DNA damage; Porphyrins; UV spectra
MeSH headings : Animals; Antineoplastic Agents / chemical synthesis; Antineoplastic Agents / chemistry; Antineoplastic Agents / pharmacology; Antioxidants / chemical synthesis; Antioxidants / chemistry; Antioxidants / pharmacology; Bleomycin / pharmacology; Cell Line, Tumor; Chlorocebus aethiops; DNA Damage / drug effects; Free Radicals / metabolism; Hemolysis / drug effects; Humans; Oxidation-Reduction / drug effects; Porphyrins / chemical synthesis; Porphyrins / chemistry; Porphyrins / pharmacology; Rats; Structure-Activity Relationship; Vero Cells
TL;DR: A novel series of mesotetrakis[aryl]‐21H,23H‐porphyrin derivatives 2a-j was synthesized from the condensation of aldehyde derivatives 1a–j with pyrrole in the presence of p‐toluenesulfonic acid and found that these compounds effectively inhibit the free radical‐induced oxidative hemolysis of red blood cells. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2012 journal article

Novel yellow azo-anthraquinone dyes for polylactide fibres: effects of alkyl chain length

COLORATION TECHNOLOGY, 128(2), 121–126.

By: L. Lu*, L. He*, S. Zhang* & H. Freeman n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2012 journal article

Structure-photovoltaic performance relationships for DSSC sensitizers having heterocyclic and benzene spacers

JOURNAL OF MATERIALS CHEMISTRY, 22(38), 20403–20409.

By: B. Kim n & H. Freeman n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Spectroscopic study of anthraquinone dye/amphiphile systems in binary aqueous/organic solvent mixtures

DYES AND PIGMENTS, 91(3), 389–395.

By: L. He*, H. Freeman n, L. Lu* & S. Zhang*

author keywords: Anthraquinone dyes; Dye/amphiphile system; Solvatochromism; Binary solvent mixture; Solvent polarity; Solvation state
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Studies involving reactive dyes containing a benzophenone ultraviolet absorber

COLORATION TECHNOLOGY, 127(1), 47–54.

By: L. He*, G. Gong*, H. Freeman n, W. Jian, M. Chen & D. Zhao*

Source: Web Of Science
Added: August 6, 2018

2010 journal article

Palladium nanoparticle microemulsions: Formation and use in catalytic hydrogenation of o-chloronitrobenzene

CHEMICAL ENGINEERING JOURNAL, 165(2), 709–713.

By: C. Liang*, J. Han*, K. Shen*, L. Wang*, D. Zhao* & H. Freeman n

author keywords: Palladium nanoparticles; Microemulsion; Hydrogenation; o-Chloronitrobenzene
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2010 journal article

Synthesis and application of yellow azo-anthraquinone disperse dyes for polylactide fibres

COLORATION TECHNOLOGY, 126(2), 92–96.

By: L. He*, L. Lu*, S. Zhang* & H. Freeman n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2010 review

Synthesis and characterization of selected 4,4 '-diaminoalkoxyazobenzenes

[Review of ]. DYES AND PIGMENTS, 87(2), 100–108.

By: E. Jeong n, H. Freeman n & L. Claxton*

author keywords: Monoazo dyes; Diaminoalkoxyazobenzenes; N-hydroxyethyl groups; Mutagenicity assay
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2009 journal article

Monoazo dyes based on 5,10-dihydrophenophosphazine, Part 2: Azo acid dyes

DYES AND PIGMENTS, 81(2), 137–143.

By: Y. Zhi-Gang, Z. Chun-Xia, Z. De-Feng, H. Freeman*, C. Pei-Tong & H. Jie

author keywords: 5,10-Dihydrophenophosphazine; Synthesis; Fastness properties; Mutagenicity; Dye exhaustion; Acid dyes
Source: Web Of Science
Added: August 6, 2018

2009 journal article

X-ray and molecular modelling studies of 4-[N-alkylamino]azobenzene dyes

DYES AND PIGMENTS, 82(3), 299–306.

By: L. He*, A. El-Shafei*, H. Freeman* & P. Boyle*

Contributors: L. He*, A. El-Shafei*, H. Freeman* & P. Boyle*

author keywords: Aminoazobenzene dyes; DFT calculations; Solvatochromism; X-ray diffraction; Polarizability; Asymmetric molecules
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2008 journal article

Hydrogenation of o-chloronitrobenzene on a Pd/C catalyst doped with metal oxide nanoparticles

CHEMICAL ENGINEERING JOURNAL, 141(1-3), 368–374.

By: G. Zhang*, L. Wang*, K. Shen*, D. Zhao* & H. Freeman n

author keywords: Pd/C catalyst; nanoparticles; 2,2 '-dichlorohydrazobenzene; hydrogenation
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Hydrolyzed reactive dyes. Part 1: Analyses via fast atom bombardment and electrospray mass spectrometry

DYES AND PIGMENTS, 79(2), 89–100.

By: S. Nayar n & H. Freeman n

author keywords: mass spectrometry; reactive dyes; hydrolyzed dyes; electrospray spectra; fast atom bombardment
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Photostability of isotactic polypropylene containing monoazo pigment

JOURNAL OF APPLIED POLYMER SCIENCE, 108(5), 2950–2957.

author keywords: photodegradation; polypropylene; organic pigment; photostabilizer; antioxidant
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Aquatic toxicity evaluation of copper-complexed direct dyes to the Daphnia magna

DYES AND PIGMENTS, 73(1), 126–132.

By: J. Bae* & H. Freeman n

author keywords: direct dyes; aquatic toxicity; Daphnia magna; genotoxicity; copper complex dyes; benzidine
UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Aquatic toxicity evaluation of new direct dyes to the Daphnia magna

DYES AND PIGMENTS, 73(1), 81–85.

By: J. Bae* & H. Freeman n

author keywords: direct dyes; aquatic toxicity; Daphnia magna; genotoxicity; benzidine; CI Direct Blue 218
UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Design, synthesis, and characterization of new iron-complexed azo dyes

Dyes and Pigments, 72(1), 8–15.

By: M. Szymczyk n, A. El-Shafei n & H. Freeman n

Contributors: M. Szymczyk n, A. El-Shafei n & H. Freeman n

author keywords: azo and formazan dyes; iron-complexed dyes; trifluoroacetamido and mesylamido groups
Sources: Web Of Science, Crossref, ORCID
Added: August 6, 2018

2007 journal article

Dyes for polyester: disperse dyes

Chimica Oggi, 25(4), 38–41.

By: A. Reife & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

2007 journal article

Photo-stability of pigmented isotactic polypropylene

Journal of Applied Polymer Science, 104.

By: Z. Ahmadi, M. Kish, H. Freeman, R. Kotek & A. Katbab

Source: NC State University Libraries
Added: August 6, 2018

2007 journal article

Synthesis and mutagenic properties of 4,4'-diamino-p-terphenyl and 4,4'-diamino-p-quaterphenyl

COLORATION TECHNOLOGY, 123(1), 34–38.

By: J. Wang n, H. Freeman n & L. D Claxton*

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Synthesis and mutagenic properties of direct dyes from 4,4'-diamino-p-terphenyl and 4,4'-diamino-p-quaterphenyl

COLORATION TECHNOLOGY, 123(1), 39–45.

By: J. Wang n, H. Freeman n & L. D Claxton*

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Synthesis and properties of disperse dyes containing a built-in triazine stabilizer

DYES AND PIGMENTS, 74(3), 608–614.

By: Y. Sun*, D. Zhao* & H. Freeman n

author keywords: triazine photostabilizer; UV radiation protection; disperse dyes
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Design, synthesis and application of easy wash-off reactive dyes

COLORATION TECHNOLOGY, 122(1), 27–36.

By: P. Suwanruji n & H. Freeman*

Source: Web Of Science
Added: August 6, 2018

2006 journal article

Evaluation of new 2,2 '-dimethyl-5,5 '-dipropoxybenzidine- and 3,3 '-dipropoxybenzidine-based direct dye analogs for mutagenic activity by use of the Salmonella/mammalian mutagenicity assay

MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS, 603(2), 173–185.

By: J. Bae n, H. Freeman n, S. Warren* & L. Claxton*

author keywords: direct dyes; mutagenicity; Salmonella assay; benzidine analogs
MeSH headings : Animals; Azo Compounds / toxicity; Benzidines / toxicity; Coloring Agents / toxicity; Cricetinae; Male; Microsomes, Liver / drug effects; Mutagenicity Tests; Mutation / drug effects; Rats; Rats, Sprague-Dawley; Salmonella typhimurium / drug effects; Structure-Activity Relationship
TL;DR: The results of this study suggest that although benzidine analogs are potential replacements for benzidine, there is a need to understand which mutagenic products are produced when reductive metabolism is present and whether or not metal complexes of these dyes aremutagenic. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Fiber reactive dyes

Colourage Annual, 53(4), 85–101.

By: H. Freeman & P. Suwanruji

Source: NC State University Libraries
Added: August 6, 2018

2006 journal article

High affinity, high efficiency fibre-reactive dyes

COLORATION TECHNOLOGY, 122(4), 187–193.

By: B. Smith, R. Berger n & H. Freeman n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Influences of new azo dyes to the aquatic ecosystem

FIBERS AND POLYMERS, 7(1), 30–35.

By: J. Bae*, H. Freeman* & S. Kim

author keywords: azo direct dyes; Daphnia magna; copper; aquatic toxicity; aquatic ecosystem; benzidine
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Mass spectrometric analysis of sulphonated dyes based on diaminobiphenyls

COLORATION TECHNOLOGY, 122(1), 22–26.

By: K. Volna*, M. Holcapek*, P. Suwanruji n & H. Freeman n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Use of gamma-cyclodextrin/epichlorohydrin polymer in merging fabric formation and coloration processes

COLORATION TECHNOLOGY, 122(6), 345–349.

By: D. Jenkins n, K. El-Tahlawy n, A. El-Shafei n, H. Freeman* & S. Hudson n

Contributors: D. Jenkins n, K. El-Tahlawy n, A. El-Shafei n, H. Freeman* & S. Hudson n

UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2005 journal article

Characterizing of model direct dyes interactions with cotton cellulose via 1D and 2D Raman spectroscopy

CELLULOSE, 12(5), 497–506.

By: A. Pielesz*, A. Weselucha-Birczynska*, H. Freeman n & A. Wlochowicz*

author keywords: 1D and 2D Raman spectroscopy; cotton cellulose; dye interactions with cellulose; model direct dyes
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Evaluation of new direct dyes for mutagenicity using the Salmonella mammalian mutagenicity assay

FIBERS AND POLYMERS, 6(4), 297–305.

By: J. Bae* & H. Freeman*

author keywords: direct dyes; mutagenicity; salmonella; benzidine; genotoxicity; azo dyes
TL;DR: A series of new direct dyes based on benzidine congeners were evaluated for mutagenicity in Salmonella typhimurium strains TA98 and TA100 and were judged to be non-mutagenic with and without metabolic activation while toxicity was seen in some dyes at high doses. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Evaluation of new metallized direct dyes for mutagenicity using the Salmonella mammalian mutagenicity assay

FIBERS AND POLYMERS, 6(3), 235–243.

By: J. Bae* & H. Freeman*

TL;DR: A series of new metallized direct dyes based on benzidine congeners were evaluated for mutagenicity in Salmonella typhimurium strains TA98 and TA100 and were judged to be non-mutagenic with and without metabolic activation while toxicity was seen in some dyes at high doses. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Mutagenicity evaluation of the commercial product CI Disperse Blue 291 using different protocols of the Salmonella assay

FOOD AND CHEMICAL TOXICOLOGY, 43(1), 49–56.

By: G. Umbuzeiro, H. Freeman n, S. Warren*, F. Kummrow* & L. Claxton*

author keywords: azo dves; Salmonella assay; aminoazobenzene; disperse dyes; arylamines; CI disperse blue 291; mutation spectral Salmonella TA7000; CAS 56548-64-2
MeSH headings : Acetanilides / toxicity; Acetyltransferases / metabolism; Azo Compounds / toxicity; Coloring Agents / toxicity; Dose-Response Relationship, Drug; Frameshift Mutation; Fresh Water; Humans; Mutagenicity Tests / methods; Nitroreductases / metabolism; Salmonella typhimurium / drug effects; Salmonella typhimurium / genetics; Water Pollutants, Chemical / toxicity
TL;DR: Results clearly showing that the bacterial nitroreductase and O-acetyltransferase metabolites of this compound are mutagenic, there is a need to test this dye using in vivo systems to verify possible adverse effects of this product in mammalian tissues. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Synthetic dyes based on environmental considerations. Part 3: Aquatic toxicity of iron-complexed azo dyes

Coloration Technology, 121(5), 265–270.

By: L. Edwards n & H. Freeman n

Source: NC State University Libraries
Added: August 6, 2018

2005 journal article

Synthetic dyes based on environmental considerations. Part 4: Aquatic toxicity of iron-complexed formazan dyes

Coloration Technology, 121(5), 271–274.

By: L. Edwards n & H. Freeman n

Source: NC State University Libraries
Added: August 6, 2018

2005 journal article

The contribution of azo dyes to the mutagenic activity of the Cristais River

CHEMOSPHERE, 60(1), 55–64.

By: G. Umbuzeiro, H. Freeman n, S. Warren*, D. Oliveira*, Y. Terao*, T. Watanabe*, L. Claxton*

author keywords: azo dyes; water contamination; salmonella; textile effluent; water pollution; mutagenicity; TLC; Disperse blue 373; Disperse violet 93; Disperse orange 37
MeSH headings : Animals; Azo Compounds / chemistry; Azo Compounds / toxicity; Biological Assay; Brazil; Chromatography, Thin Layer; Coloring Agents / chemistry; Coloring Agents / toxicity; Fresh Water / analysis; In Vitro Techniques; Industrial Waste / adverse effects; Industrial Waste / analysis; Magnetic Resonance Spectroscopy; Mass Spectrometry; Microsomes, Liver / metabolism; Mutagenicity Tests; Mutagens / chemistry; Mutagens / toxicity; Rats; Salmonella / drug effects; Textile Industry; Water Pollutants, Chemical / analysis; Water Pollutants, Chemical / toxicity; Water Supply / analysis
TL;DR: It is shown that these dyes contributed to the mutagenic activity found in the Cristais River environmental samples analyzed and are indirectly affecting the quality of the related drinking water. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2005 chapter

Water and wastewater analysis

In Chemical testing of textiles (pp. 242–269).

By: H. Freeman n & C. Smith n

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Color yes, toxicity no: Systematic approaches to meeting this challenge

AATCC Review, 4(12), 16–21.

By: H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

2004 conference paper

Design, synthesis, and characterization of new iron-complexed azo dyes

Colorchem '04: proceedings : 23-27 May 2004, Hotel Harmony, S?pindleru?v Mly?n, Czech Republic. Pardubice: Vy?zkumny? u?stav organicky?ch synte?z.

By: H. Freeman, M. Szymczyk & A. El-Shafei

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Developing azo and formazan dyes based on environmental considerations: Salmonella mutagenicity

MUTATION RESEARCH-FUNDAMENTAL AND MOLECULAR MECHANISMS OF MUTAGENESIS, 546(1-2), 17–28.

By: L. Edwards n, H. Freeman n & L. Claxton*

author keywords: Salmonella; metal-complex; formazan dye
MeSH headings : Azo Compounds / chemical synthesis; Coloring Agents / chemical synthesis; Formazans / chemical synthesis; Mutagenicity Tests; Salmonella / genetics
TL;DR: The results of this study suggest that the mutagenicity of the unmetallized dye precursors plays a role in determining themutagenicityOf the iron-complexes, the metal-complexed dyes based on mutagenic ligands were also Mutagenic, while those dyesbased on nonmutagenicligands were nonMutagenic. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Dyes from enzyme-mediated oxidation of aromatic amines

TEXTILE RESEARCH JOURNAL, 74(3), 215–222.

By: S. Shaw n & H. Freeman n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Metal-complexed dyes

Review of Progress in Coloration and Related Topics, 34, 39–57.

By: H. Freeman* & M. Szymczyk

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Non-mutagenic organic pigment intermediates. II. Isomorphous 2,2 '-dichloro-5,5 '-dipropoxybenzidine and 2,2 '-dimethyl-5,5 '-dipropoxybenzidine

ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY, 60(8), O569–O571.

By: A. El-Shafei n, D. Hinks n, P. Boyle n & H. Freeman n

Contributors: A. El-Shafei n, D. Hinks n, P. Boyle n & H. Freeman n

TL;DR: The title compounds, C 18 H 22 Cl 2 N2 O 2 and C 20 H 28 N 2 O 2 , respectively, are isomorphous and exhibit weak N-H...N hydrogen bonding, which is influenced by the differences in hybridization around the amine N atoms. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2004 journal article

Studies toward a universal dye for textile fibres

Coloration Technology, 120(5), 220–225.

By: P. Suwanruji n, H. Freeman n & D. Zhao*

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Studies towards lightfast automotive dyes for polyester

Journal of Textile and Apparel Technology and Management, 3(4), 14.

By: H. Freeman, N. Berthelon & L. Edwards

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Syntheses, mutagenicity and applied performance of 2,8-diamino-10-methoxy-5,10-dihydrophenophosphazine 10-oxide

Acta Chimica Sinica, 62(10), 986–991.

By: Z. Yin, W. Xiong, D. Zhao & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

2003 article

Assessing secondary structure of a dyed wool fibre by means of FTIR and FTR spectroscopies

Pielesz, A., Freeman, H. S., Weselucha-Birczynska, A., Wysocki, M., & Wlochowicz, A. (2003, June 1). JOURNAL OF MOLECULAR STRUCTURE, Vol. 651, pp. 405–418.

By: A. Pielesz*, H. Freeman n, A. Weselucha-Birczynska*, M. Wysocki* & A. Wlochowicz*

author keywords: Raman spectroscopy; Fourier transform infrared spectroscopy; model azo dye
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Characterisation of direct dye interactions with cotton via IR and Raman spectroscopies

Advances in Colour Science and Technology, 6(4), 111–115.

By: H. Freeman, A. Pielesz, M. Wysocki, A. Weselucha-Birczynska & A. Wlochowicz

Source: NC State University Libraries
Added: August 6, 2018

2003 chapter

Dye application, manufacture of dye intermediates and dyes

In Riegel's handbook of industrial chemistry (10th ed.). New York: Kluwer Academic/Plenum Publishers.

By: H. Freeman & G. Mock

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Metallization of non-genotoxic direct dyes

DYES AND PIGMENTS, 57(2), 121–129.

By: J. Bae n, H. Freeman n & A. El-Shafei n

Contributors: J. Bae n, H. Freeman n & A. El-Shafei n

author keywords: metallization; direct dyes; neutron activation; synthesis; lightfastness
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2003 journal article

Non-mutagenic organic pigment intermediates. I. 3,3 '-Dipropoxybenzidine

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 59(2), O71–O73.

By: A. El-Shafei n, P. Boyle n, D. Hinks n & H. Freeman n

Contributors: A. El-Shafei n, P. Boyle n, D. Hinks n & H. Freeman n

MeSH headings : Benzidines / chemistry; Crystallography, X-Ray; Fourier Analysis; Hydrogen Bonding; Models, Molecular; Mutagens; Pigments, Biological / chemistry
TL;DR: Crystals of the title compound were grown from ethanol by slow evaporation and the structure has been determined, forming an infinite two-dimensional array of N-H interactions parallel to the (101) direction. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2003 journal article

Studies on the synthesis and mutagenicity of 2,8-diamino-10- hydroxy-5-methyl-5,10-dihydrophenophosphazine-10-oxide

Chemical Journal of Chinese Universities, 24(7), 1210–1215.

By: Z. Yin, K. Jin, D. Zhao, Q. Peng & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Synthesis, properties and application of four new 1: 2 aluminium-complexed azo dyes

Coloration Technology, 119(1), 41–47.

By: J. Hooker n, D. Hinks n & H. Freeman n

UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Copper salts in the post-metallization of non-genotoxic direct dyes

FIBERS AND POLYMERS, 3(4), 147–152.

By: J. Bae n & H. Freeman n

author keywords: metallization; direct dyes; neutron activation; lightfastness; mutagenicity
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Synthesis and evaluation of non-genotoxic direct dyes

FIBERS AND POLYMERS, 3(4), 140–146.

By: J. Bae n & H. Freeman n

author keywords: direct dyes; benzidine replacement; Electrospray ionization mass spectrometry; mutagenicity; wash- and light-fastness
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Trisazo direct black dyes based on nonmutagenic 3,3 '-disubstituted benzidines

DYES AND PIGMENTS, 53(2), 109–117.

By: G. Gong*, X. Gao*, J. Wang*, D. Zhao* & H. Freeman n

author keywords: nonmutagenic; benzidine intermediates; direct black dyes; synthesis; dye application
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Direct dyes from non-genotoxic diamines

AATCC Review, 1(9), 67.

By: H. Freeman & J. Bae

Source: NC State University Libraries
Added: August 6, 2018

2001 journal article

Direct dyes from nongenotoxic diamines

AATCC Review, 1(9), 67–70.

By: J. Bae & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

2001 journal article

Semi-empirical molecular orbital methods in the design of organic colorants

AATCC Review, 1(12), 23–26.

By: A. El-Shafei, D. Hinks, H. Freeman & J. Lye

Source: NC State University Libraries
Added: August 6, 2018

2001 journal article

Semi-empirical molecular orbital methods in the design of organic pigments

AATCC Review, 1(12), 23–26.

By: A. El-Shafei, D. Hinks & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

2001 journal article

Synthesis and evaluation of organic pigments. 2. Studies of bisazomethine pigments based on planar nonmutagenic benzidine analogs

DYES AND PIGMENTS, 48(1), 7–13.

By: D. Hinks n, K. Freeman n, Y. Arai & H. Ando

author keywords: bisazomethine pigment; benzidine; nonmutagenic
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Synthesis and evaluation of organic pigments. 3. Studies based on nonmutagenic twisted benzidines

DYES AND PIGMENTS, 48(1), 15–27.

By: J. Sokolowska*, D. Hinks n & H. Freeman n

author keywords: pigments; azomethine; azoacetoacetanilide; benzimidazolone; pyrazolone; azonaphthol; mutagenicity; benzidine; dihedral angle
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Synthesis and evaluation of organic pigments. 4. New monoarylide and diarylide pigments

DYES AND PIGMENTS, 48(2), 93–106.

By: M. Nakpathom n, D. Hinks n & H. Freeman n

author keywords: pigments; disazoacetoacetanilide; diarylide; monoarylide pigments; mutagenicity; dihedral angle
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 book

Colorants for non-textile applications (1st ed.)

(p. 618).

By: H. Freeman* & A. Peters

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Dyes based on 5,10-dihydrophenophosphazine. Part I: Disazo direct dyes

DYES AND PIGMENTS, 46(3), 121–128.

By: K. Bello*, K. Shen*, D. Zhao*, M. Esancy n & H. Freeman n

author keywords: benzidine replacement; direct dyes; diaminodihydrophenophosphazine
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 chapter

Iron-complexed dyes: Colorants in green chemistry

In L. G. H. P. T. Anastas & T. C. Williamson (Eds.), Green chemical syntheses and processes.

By: H. Freeman n & L. Edwards n

Ed(s): L. P. T. Anastas & T. Williamson

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Molecular modeling of Congo Red analogues containing terphenyl and quarterphenyl moieties

DYES AND PIGMENTS, 47(1-2), 53–64.

By: J. Lye n, H. Freeman n & R. Cox*

author keywords: molecular modeling; 4,4 ''-diaminoterphenyl; 4,4 ''-diaminoquarterphenyl; Congo Red analogs; geometry optimization
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Monomethoxy-4-aminoazobenzenes: a computational study

DYES AND PIGMENTS, 46(2), 109–119.

By: K. Bhat*, H. Freeman n, J. Velga*, L. Sztandera*, M. Trachtman* & C. Bock*

author keywords: azo dyes; carcinogen; density functional theory
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Pollution prevention in the production of dyes and pigments

Textile Chemist and Colorist & American Dyestuff Reporter, 32(1), 56–60.

By: A. Reife & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Synthesis and evaluation of organic pigments and intermediates. 1. Nonmutagenic benzidine analogs

DYES AND PIGMENTS, 44(3), 199–207.

By: D. Hinks n, H. Freeman n, M. Nakpathom n & J. Sokolowska*

author keywords: nonmutagenic; benzidine intermediates; dihedral angle
TL;DR: Good yields with minimal purification were obtained for certain diamines, providing potentially useful nongenotoxic intermediates in the synthesis of bisazo and bisazomethine dyes and pigments, and the corresponding bis-acetoacetamido derivatives were also nonmutagenic. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1999 journal article

Azo and nitrodiphenylamine photochemistry

Advances in Colour Science and Technology, 2.

By: H. Freeman & J. Lye

Source: NC State University Libraries
Added: August 6, 2018

1999 review

Developments in dyestuff chemistry

[Review of ]. Review of Progress in Coloration and Related Topics, (29), 8–22.

By: H. Freeman n & J. Sokolowska*

Source: NC State University Libraries
Added: August 6, 2018

1999 journal article

Disperse Red 60 analogs

Indian Journal of Fibre & Textile Research, 24(4), 297–302.

By: D. Ukponmwan, C. Odilora, M. Offor & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

1999 journal article

Disperse dyes containing a built-in oxalanilide stabilizer

DYES AND PIGMENTS, 42(1), 53–63.

By: H. Freeman*, M. Mason* & J. Lye*

author keywords: oxalanilide photostabilizer; lightfastness; CI Disperse Yellow 86; CI Disperse Red 167; molecular modeling
Source: Web Of Science
Added: August 6, 2018

1999 journal article

Molecular modeling in dye chemistry: Studies involving two disperse dyes

TEXTILE RESEARCH JOURNAL, 69(8), 583–590.

By: J. Lye n, H. Freeman n & D. Hinks n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1999 patent

Organic pigments from twisted benzidines

Washington, DC: U.S. Patent and Trademark Office.

By: H. Freeman, D. Hinks & J. Sokolowska-Gajda

Source: NC State University Libraries
Added: August 6, 2018

1999 journal article

X-ray crystal structure of CI Disperse Yellow 86

DYES AND PIGMENTS, 42(1), 107–111.

By: J. Lye n, H. Freeman n, M. Mason n & P. Singh n

author keywords: CI Disperse Yellow 86; X-ray structure; H-bonding; semi-empirical methods
Source: Web Of Science
Added: August 6, 2018

1998 chapter

Dyes and pigments, environmental chemistry

In Encyclopedia of environmental analysis and remediation. New York: Wiley.

By: H. Freeman, A. Reife & D. Betowski

Source: NC State University Libraries
Added: August 6, 2018

1998 journal article

Field desorption mass spectral analysis of some nonmutagenic benzidine-based pigments

DYES AND PIGMENTS, 39(3), 159–171.

By: J. Sokolowska-Gajda, D. Hinks n, C. Haney n, H. Freeman n & M. Tanaka

author keywords: nonmutagenic; benzidine; FD spectra
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Iron salts in the post-metallization of mordant dyes

TEXTILE RESEARCH JOURNAL, 68(2), 141–149.

By: H. Bardole n, H. Freeman n & A. Reife n

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1997 chapter

Computational chemistry applied to synthetic dyes

In Computational chemistry and chemical engineering: proceedings of the Third UNAM-CRAY Supercomputing Conference: Universidad Nacional Auto?noma de Me?xico, 13-16 August 1996. River Edge, NJ: World Scientific.

By: H. Freeman, J. Lye & D. Hinks

Source: NC State University Libraries
Added: August 6, 2018

1997 patent

Iron-complexed formazan dyes for polyamide and protein substrates

Washington, DC: U.S. Patent and Trademark Office.

By: H. Freeman, J. Sokolowska-Gajda & A. Reife

Source: NC State University Libraries
Added: August 6, 2018

1997 journal article

Iron: Producing more than rust in our environment

Chemtech, 27(10), 17–25.

By: A. Reife, E. Weber & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

1997 journal article

X-ray crystal structure of disazo dyes .1. CI Disperse Orange 29

DYES AND PIGMENTS, 35(1), 11–21.

By: H. Freeman n, S. McIntosh n & P. Singh n

author keywords: CI Disperse Yellow 23; CI Disperse Orange 29; syn conformation; monoclinic; disazo dyes
Source: Web Of Science
Added: August 6, 2018

1997 journal article

X-ray crystal structure of disazo dyes .2. Derivatives of CI Disperse Yellow 23 and CI Disperse Orange 29

DYES AND PIGMENTS, 35(2), 149–164.

By: H. Freeman n, S. McIntosh n & P. Singh n

author keywords: crystal structure; diazo dyes; anti-conformation; monoclinic
Source: Web Of Science
Added: August 6, 2018

1996 chapter

Carbon adsorption

In A. Reife & H. S. Freeman (Eds.), Environmental chemistry of dyes and pigments (pp. 3–31). New York: Wiley.

By: H. Freeman & A. Reife

Ed(s): . A. Reife & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

1996 chapter

Chemical removal of phosphate ions from disperse dye filtrates

In A. Reife & H. S. Freeman (Eds.), Environmental chemistry of dyes and pigments (pp. 239–251). New York: Wiley.

By: J. Sokolowska-Gajda, H. Freeman & A. Reife

Ed(s): . A. Reife & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

1996 book

Environmental chemistry of dyes and pigments

(p. 329). New York: Wiley.

By: H. Freeman & A. Reife

Source: NC State University Libraries
Added: August 6, 2018

1996 chapter

Genotoxicity of azo dyes: Bases and implications

In A.T. Peters & H. S. Freeman (Eds.), Physico-chemical principles of color chemistry.

By: H. Freeman*, D. Hinks* & J. Esancy

Ed(s): . A.T. Peters & H. Freeman*

TL;DR: This chapter contains a summary of recent literature, along with examples of how this information has been used to design non-mutagenic azo dyes and aromatic amines, and will be presented more from the perspective of a dyestuff chemist rather than a genetic toxicologist. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

1996 book

Physico-chemical principles of color chemistry (1st ed.)

(p. 299).

By: H. Freeman* & A. Peters

Source: NC State University Libraries
Added: August 6, 2018

1996 journal article

Synthetic dyes based on environmental considerations .2. Iron complexed formazan dyes

DYES AND PIGMENTS, 30(1), 1–20.

By: J. SokolowskaGajda, H. Freeman n & A. Reife n

Source: Web Of Science
Added: August 6, 2018

1995 conference paper

A new look at iron complexed dyes

Book of papers: 1995 International Conference & Exhibition, October 8-11, Atlanta, Ga, 397–405. Research Triangle Park, N.C.: American Association of Textile Chemists and Colorists.

By: H. Freeman, L. Cleveland, J. Sokolowska-Gajda & A. Reife

Source: NC State University Libraries
Added: August 6, 2018

1995 chapter

Computer-aided dyestuff design

In Annual international conference and exhibition of AATCC. RTP, NC: American Association of Textile Chemists and Colorists.

By: D. Hinks, J. Lye & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

1995 journal article

Effect of chemical structure on molecular motion of spin probes doped in nylon 6 film

Journal of the Korean Fiber Society, 32(6), 554.

By: . Kim S.D. & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

1995 book

Modern colourants: Syntheses and structure

By: H. Freeman* & A. Peters

Source: NC State University Libraries
Added: August 6, 2018

1995 journal article

Synthesizing premetallized acid dyes based on environmental considerations

Textile Chemist and Colorist, 27(2), 13.

By: J. Sokolowska-Gajda, H. Freeman & A. Reife

Source: NC State University Libraries
Added: August 6, 2018

1994 patent

Environmentally friendly method for producing lightfast black shades on natural and synthetic substrates

Washington, DC: U.S. Patent and Trademark Office.

By: H. Freeman, A. Reife & J. Sokalawska-Gajda

Source: NC State University Libraries
Added: August 6, 2018

1994 journal article

IRRADIATION OF CI DISPERSE YELLOW-23 AND DISPERSE ORANGE-29 IN AN ESTER ENVIRONMENT

TEXTILE RESEARCH JOURNAL, 64(6), 309–315.

By: H. Freeman n & S. Mcintosh n

Source: Web Of Science
Added: August 6, 2018

1994 journal article

SYNTHETIC DYES BASED ON ENVIRONMENTAL CONSIDERATIONS .1. IRON COMPLEXES FOR PROTEIN AND POLYAMIDE FIBERS

TEXTILE RESEARCH JOURNAL, 64(7), 388–396.

By: J. Sokolowskagajda, H. Freeman n & A. Reife n

UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1993 patent

Anti-hypertensive sulfonanilides

Washington, DC: U.S. Patent and Trademark Office.

By: J. McDermed, A. Tadepalli, V. Chang, K. Hurley & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

1993 journal article

DETERMINATION OF AROMATIC-AMINES ORIGINATING FROM AZO DYES BY CHEMICAL-REDUCTION COMBINED WITH LIQUID-CHROMATOGRAPHY MASS-SPECTROMETRY

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 27(8), 1665–1672.

By: R. Voyksner, R. Straub, J. Keever, H. Freeman* & W. Hsu

Source: Web Of Science
Added: August 6, 2018

1993 conference paper

Premetallized acid dyes based on environmental considerations

Book of Papers, American Association of Textile Chemists and Colorists. International Conference & Exhibition, 254–259.

By: H. Freeman, J. Sokolowska-Gajda & A. Reife

Source: NC State University Libraries
Added: August 6, 2018

1992 journal article

A NEW MEDIUM FOR THE DIAZOTIZATION OF 2-AMINO-6-NITROBENZOTHIAZOLE AND 2-AMINOBENZOTHIAZOLE

DYES AND PIGMENTS, 20(2), 137–145.

By: J. Sokolowskagajda & H. Freeman

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1992 journal article

AN APPROACH TO THE DESIGN OF LIGHTFAST DISPERSE DYES - ANALOGS OF DISPERSE YELLOW-42

DYES AND PIGMENTS, 20(3), 171–195.

By: H. Freeman n & J. Posey n

Source: Web Of Science
Added: August 6, 2018

1992 journal article

ANALOGS OF DISPERSE RED-167 CONTAINING A BUILT-IN PHOTOSTABILISER MOIETY

DYES AND PIGMENTS, 20(3), 147–169.

By: H. Freeman n & J. Posey n

Source: Web Of Science
Added: August 6, 2018

1992 journal article

Evaluation of factors contributing to the light-induced yellowing of white-washed denim. part I: Identification of extractable organics and metal ions

Textile Chemist and Colorist, 24(9), 66.

By: J. Rucker, H. Freeman & W. Hsu

Source: NC State University Libraries
Added: August 6, 2018

1992 journal article

Evaluation of factors contributing to the light-induced yellowing of white-washed denim. part II: Effects of various treatments on metal content and photo-yellowing

Textile Chemist and Colorist, 24(10), 21.

By: J. Rucker, H. Freeman & W. Hsu

Source: NC State University Libraries
Added: August 6, 2018

1992 journal article

X-RAY CRYSTAL-STRUCTURE OF DISPERSE RED-167

DYES AND PIGMENTS, 20(4), 279–289.

By: H. Freeman n, J. Posey n & P. Singh n

Source: Web Of Science
Added: August 6, 2018

1991 journal article

ARYLAZO DYES CONTAINING A BUILT-IN HINDERED-AMINE MOIETY

DYES AND PIGMENTS, 17(2), 83–100.

By: H. Freeman n, S. Kim n, R. Gilbert n & R. Mcgregor n

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1991 chapter

An approach to the design and synthesis of non-mutagenic dyes: Analogs of the mutagen 4-amino-3-methoxyazobenzene - the design and synthesis of organic dyes and pigments

In A.T. Peters & H. S. Freeman (Eds.), Colour chemistry: the design and synthesis of organic dyes and pigments. New York: Elsevier Applied Science.

By: H. Freeman, J. Esancy & L. Claxton

Ed(s): . A.T. Peters & H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

1991 journal article

Color, yes; cancer, no

Chemtech, 21(7), 438.

By: H. Freeman, J. Esancy, L. Claxton & M. Esancy

Source: NC State University Libraries
Added: August 6, 2018

1991 book

Colour chemistry: The design and synthesis of organic dyes and pigments

New York: Elsevier Applied Science.

By: H. Freeman & A. Peters

Source: NC State University Libraries
Added: August 6, 2018

1991 conference paper

Design and synthesis of lightfast disperse dyes

Book of papers: 1991 international Conference & Exhibition, October 8-11, Radisson Plaza Hotel, Charlotte, N.C., 114–121. Research Triangle Park, N.C.: American Association of Textile Chemists and Colorists.

Harold Freeman

Source: NC State University Libraries
Added: August 6, 2018

1991 journal article

Matrix selection in the FAB mass spectral analysis of synthetic dyes

Dyes and Pigments, 16(4), 317.

By: H. Freeman, Z. Hao, J. Sokolowska-Gajda & R. VanBreemen

Source: NC State University Libraries
Added: August 6, 2018

1991 journal article

X-RAY CRYSTAL-STRUCTURE OF THE DYE 4-(N,N-BIS-(BETA-HYDROXYETHYL) AMINO) AZOBENZENE

DYES AND PIGMENTS, 17(1), 1–10.

By: S. Mcintosh n, H. Freeman n & P. Singh n

Source: Web Of Science
Added: August 6, 2018

1990 journal article

AN APPROACH TO THE DESIGN OF NONMUTAGENIC AZO DYES - ANALOGS OF THE MUTAGEN CI DIRECT BLACK 17

DYES AND PIGMENTS, 13(1), 55–70.

By: H. Freeman n, J. Esancy n & L. Claxton*

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1990 journal article

CHARACTERIZATION OF THE PRODUCTS DERIVED FROM THE NITRATION OF 1,5-DIHYDROXYANTHRAQUINONE (ANTHRARUFIN) AND 1,8-DIHYDROXYANTHRAQUINONE (CHRYSAZIN)

DYES AND PIGMENTS, 12(2), 145–155.

By: D. Ukponmwan n & H. Freeman n

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1990 journal article

Fast atom bombardment and desorption chemical ionization mass spectrometry in the analysis of involatile textile dyes

Textile Chemist and Colorist, 22(5), 23.

By: H. Freeman, R. Van Breeman, J. Esancy, Z. Hao, D. Ukponmwan & W. Hsu

Source: NC State University Libraries
Added: August 6, 2018

1990 patent

Method for producing lightfast disperse dyestuffs containing a build-in photostabilizer [molecule] compound

Washington, DC: U.S. Patent and Trademark Office.

By: H. Freeman

Source: NC State University Libraries
Added: August 6, 2018

1990 journal article

PHOTODEGRADATION OF CI ACID ORANGE-60 AND CI ACID GREEN-25 IN AN AMIDE ENVIRONMENT

TEXTILE RESEARCH JOURNAL, 60(4), 221–227.

By: H. Freeman n & J. Sokolowskagajda

Source: Web Of Science
Added: August 6, 2018

1990 journal article

PURIFICATION PROCEDURES FOR SYNTHETIC DYES .4. FLASH CHROMATOGRAPHY

DYES AND PIGMENTS, 12(3), 233–242.

By: H. Freeman n, Z. Hao n, S. Mcintosh n, J. Posey n & W. Hsu n

TL;DR: The results of this study indicate that this technique offers a rapid procedure for the generation of gram quantities of a disperse dye, provided the dye to be purified is reasonably soluble in ordinary organic solvents such as toluene, ethyl acetate, or hexane. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1990 journal article

Some interesting substituent effects in merocyanine dyes

Education in Chemistry, 27(3), 79.

By: H. Freeman & S. McIntosh

Source: NC State University Libraries
Added: August 6, 2018

1990 chapter

Structure activity analysis of azo dyes and related compounds

In M. L. Mendelsohn & R. J. Albertini (Eds.), Mutation and the environment: proceedings of the Fifth International Conference on Environmental Mutagens, held in Cleveland, Ohio, July 10-15, 1989 (Pt. B). New York: Wiley-Liss.

By: L. Claxton, D. Walsh, J. Esancy & H. Freeman

Ed(s): . M. L. Mendelsohn & R. Albertini

Source: NC State University Libraries
Added: August 6, 2018

1990 review

THE EFFECT OF ALKOXY SUBSTITUENTS ON THE MUTAGENICITY OF SOME AMINOAZOBENZENE DYES AND THEIR REDUCTIVE-CLEAVAGE PRODUCTS

[Review of ]. MUTATION RESEARCH, 238(1), 1–22.

By: J. Esancy n, H. Freeman n & L. Claxton*

MeSH headings : Azo Compounds / toxicity; Chemical Phenomena; Chemistry; Coloring Agents / toxicity; Mutagenicity Tests; Mutagens; Oxidation-Reduction; Salmonella typhimurium / genetics; p-Aminoazobenzene / analogs & derivatives; p-Aminoazobenzene / toxicity
TL;DR: The results from the latter aspect of this study suggest that the mutagenicity of aminoazobenzene dyes can not be accounted for solely from the properties of their reductive-cleavage products. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1990 review

THE EFFECT OF ALKOXY SUBSTITUENTS ON THE MUTAGENICITY OF SOME PHENYLENEDIAMINE-BASED DISAZO DYES

[Review of ]. MUTATION RESEARCH, 238(1), 23–38.

By: J. Esancy n, H. Freeman n & L. Claxton*

MeSH headings : Azo Compounds / toxicity; Chemical Phenomena; Chemistry; Coloring Agents / toxicity; Mutagenicity Tests; Mutagens; Phenylenediamines / toxicity; Salmonella typhimurium / genetics
TL;DR: Comparison of the mutagenicity of the disazo dyes with their potential reductive-cleavage products suggests that (1) the reductive/reduction products are not solely responsible for the mutagonicity ofThe disazoDyes, and (2) significant reductive -cleavage of the Disazo dye is not taking place in the standard Salmonella assay. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1990 journal article

THE SYNTHESIS OF DISPERSE AND CATIONIC DYES FROM ACID DYE STRUCTURES

DYES AND PIGMENTS, 14(1), 35–48.

By: J. Sokolowskagajda & H. Freeman n

Source: Web Of Science
Added: August 6, 2018

1990 conference paper

The design of non-mutagenic replacements for some mutagenic dyes and dye intermediates

Book of papers: 1990 international conference & exhibition, October 1-3, Sheraton Boston Hotel, Boston, Mass., 180–188. Research Triangle Park, N.C.: American Association of Textile Chemists and Colorists.

By: H. Freeman, J. Esancy, M. Esancy & L. Claxton

Source: NC State University Libraries
Added: August 6, 2018

1989 journal article

13C NMR analysis of some azo and anthraquinone textile dyes

Textile Chemist and Colorist, 21(4), 24.

By: H. Freeman, J. SokolowskaOGajda & Z. Hao

Source: NC State University Libraries
Added: August 6, 2018

1989 journal article

DETERMINATION OF THE PHOTODEGRADATION PRODUCTS OF BASIC YELLOW-2 BY THERMOSPRAY HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY AND GAS-CHROMATOGRAPHY MASS-SPECTROMETRY

BIOMEDICAL AND ENVIRONMENTAL MASS SPECTROMETRY, 18(12), 1079–1086.

By: R. Voyksner*, T. Pack*, C. Haney n, H. Freeman n & W. Hsu n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1989 conference paper

Determination of the photodegradation products of Disperse Orange 29 by GC/MS and HPLC/MS

37th ASMS Conference on Mass Spectrometry and Allied Topics: May 21-26, 1989, Miami Beach, Florida, 1453. Denver, Colo. : ASMS.

By: H. Freeman, C. Haney, S. McIntosh & R. Voyksner

Source: NC State University Libraries
Added: August 6, 2018

1989 journal article

PHOTOLYTIC PROPERTIES OF ORTHO-SUBSTITUTED 4-[N,N-BIS(BETA-HYDROXYETHYL)AMINO]AZOBENZENES IN POLYMER SUBSTRATES

TEXTILE RESEARCH JOURNAL, 59(6), 343–349.

By: H. Freeman n & S. Mcintosh n

Source: Web Of Science
Added: August 6, 2018

1989 journal article

PROTON MAGNETIC-RESONANCE SPECTRA OF SOME NAPHTHALENE DERIVATIVES IN DMSO-D6

DYES AND PIGMENTS, 10(4), 247–257.

By: H. Freeman n & Z. Hao n

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1989 journal article

THE CHROMATOGRAPHIC BEHAVIOR OF SOME HYDROPHILIC DYES AND DYE INTERMEDIATES ON THIN-LAYERS OF STRONG AND WEAK ION-EXCHANGERS

JOURNAL OF LIQUID CHROMATOGRAPHY, 12(6), 919–935.

By: H. Freeman n, Z. Hao n & W. Hsu n

Source: Web Of Science
Added: August 6, 2018

1989 journal article

The design and synthesis of cellulose-substantive dyes

American Dyestuff Reporter, 78(4), 15.

By: H. Freeman, Z. Hao & S. Kim

Source: NC State University Libraries
Added: August 6, 2018

1989 journal article

X-RAY CRYSTAL-STRUCTURE OF THE DYES 2-NITRO-4'-[N,N-BIS(BETA-HYDROXYETHYL)AMINO]AZOBENZENE AND 2-CYANO-4'-[N,N-BIS-(BETA-HYDROXYETHYL)AMINO]AZOBENZENE

TEXTILE RESEARCH JOURNAL, 59(7), 389–395.

By: S. Mcintosh n, H. Freeman n & P. Singh n

Source: Web Of Science
Added: August 6, 2018

1988 journal article

NEW PHOSPHONIC ACID REACTIVE DYES FOR COTTON

DYES AND PIGMENTS, 9(1), 57–65.

By: H. Freeman n, L. Moser n & W. Whaley n

Source: Web Of Science
Added: August 6, 2018

1988 journal article

PROTON MAGNETIC-RESONANCE SPECTRA OF SOME NAPHTHALENE DERIVATIVES

DYES AND PIGMENTS, 9(1), 67–82.

By: H. Freeman n, W. Hsu n, J. Esancy n & M. Esancy n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1988 journal article

PURIFICATION OF SOME WATER-SOLUBLE AZO DYES BY HIGH-SPEED COUNTERCURRENT CHROMATOGRAPHY

JOURNAL OF LIQUID CHROMATOGRAPHY, 11(1), 251–266.

By: H. Freeman*, Z. Hao, S. Mcintosh & K. Mills

TL;DR: High-speed countercurrent chromatography has been used to prepare preparative amounts of pure magenta azo dyes by a method involving the continuous extraction of an aqueous solution of the d dye components by a suitable mobile phase, resulting in an increase in the quantity of dye that can be purified in a single experiment. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1987 journal article

AN APPROACH TO THE DESIGN OF NONMUTAGENIC AZO DYES .1. THE IDENTIFICATION OF NONMUTAGENIC PRECURSORS AND POTENTIAL METABOLITES

DYES AND PIGMENTS, 8(6), 417–430.

By: H. Freeman n, J. Esancy n, M. Esancy n, K. Mills n, W. Whaley n & B. Dabney*

TL;DR: The results of this study suggest that the development of non-carcinogenic azo dyes could be accomplished by employing an approach which would utilize non-mutagenic intermediates and also take into consideration the potential genotoxicity of the metabolites resulting from reductive cleavage of the azo linkages. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1987 journal article

AN APPROACH TO THE DESIGN OF NONMUTAGENIC AZO DYES .2. POTENTIAL REPLACEMENTS FOR THE BENZIDINE MOIETY OF SOME MUTAGENIC AZO DYESTUFFS

DYES AND PIGMENTS, 8(6), 431–447.

By: F. Calogero n, H. Freeman n, J. Esancy n, W. Whaley n & B. Dabney*

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1987 conference paper

Determination of the photodegradation products of Basic Yellow 2 by thermospray HPLC/MS and GC/MS

ASMS Conference on Mass Spectrometry and Allied Topics, 155–156. Denver, Colo. : ASMS.

By: H. Freeman, R. Voyksner, T. Pack, W. Hsu & C. Haney

Source: NC State University Libraries
Added: August 6, 2018

1987 journal article

PHOTOLYTIC BEHAVIOR OF SOME POPULAR DISPERSE DYES ON POLYESTER AND NYLON SUBSTRATES

TEXTILE RESEARCH JOURNAL, 57(4), 223–234.

By: H. Freeman n & W. Hsu n

Source: Web Of Science
Added: August 6, 2018

1987 journal article

PURIFICATION PROCEDURES FOR SYNTHETIC DYES .3. HPLC SEPARATION OF THE COMPONENTS OF 1,4-BIS(2,6-DIISOPROPYLANILINO)ANTHRAQUINONE

DYES AND PIGMENTS, 8(5), 389–395.

By: K. Mills n, H. Freeman n, W. Whaley n & F. Carroll n

Source: Web Of Science
Added: August 6, 2018

1986 journal article

PURIFICATION PROCEDURES FOR SYNTHETIC DYES .1. DRY COLUMN CHROMATOGRAPHY

DYES AND PIGMENTS, 7(6), 397–405.

By: H. Freeman n, C. Williard n & W. Hsu n

TL;DR: Although dry column chromatography appears to be impractical for the purification of gram quantities of acid and direct dyes, relatively simple monoazo acid dyes were successfully purified in smaller quantities by this procedure. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1986 journal article

PURIFICATION PROCEDURES FOR SYNTHETIC DYES .2. COUNTERCURRENT CHROMATOGRAPHY

DYES AND PIGMENTS, 7(6), 407–417.

By: H. Freeman n & C. Williard n

Source: Web Of Science
Added: August 6, 2018

1982 journal article

A regiospecific inter-action of meta-substituted diarylamines and phosphorus trichloride

Journal of Organic Chemistry, 47, 4637.

By: H. Freeman*, L. Freedman & M. Muftah

UN Sustainable Development Goal Categories
Source: NC State University Libraries
Added: August 6, 2018

1982 journal article

Stereochemistry of dopamine receptor agonists

Advances in Biochemical Engineering/Biotechnology, 37, 179.

By: J. McDermed* & H. Freeman*

TL;DR: In order to help understand the mode of binding of dopamine agonists to their receptors, four agonists of the 2-aminotetralin series were resolved into (+)- and (−)-enantiomers, their absolute configurations were determined, and their receptor affinities were evaluated in binding assays. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

1981 journal article

Dihydrophenophosphazines via the interactions of diarylamines and phosphorus trichloride: Applications and limitations

ACS Symposium Series, 171, 291.

By: H. Freeman n & L. Freedman n

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

1981 journal article

SYNTHESIS OF TERTIARY PHOSPHINE DERIVATIVES OF DIHYDROPHENOPHOSPHAZINE

JOURNAL OF ORGANIC CHEMISTRY, 46(26), 5373–5376.

By: H. Freeman* & L. Freedman

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1979 chapter

Enantioselectivity in the binding of (+) - and (-) - 2 - amino - 6,7 dihydroxy - 1,2,3,4 - tetrahydronaphthalene and related agonists to dopamine receptors

In I. J. K. E. Usdin & J. Barchas (Eds.), Catecholamines: basic and clinical frontiers: proceedings of the Fourth International Catecholamine Symposium, Pacific Grove, California, September 17-22, 1978.

By: J. McDermed*, H. Freeman* & R. Ferris*

Ed(s): I. E. Usdin & J. Barchas

TL;DR: It was found that the configuration of the more potent enantiomer of 5 is opposite to that of 3 and APO, relevant to the mode of binding of such agonists to DA receptors. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

1978 journal article

ACETYLDIARYLAMINES BY ARYLATION OF ACETANILIDES - SOME APPLICATIONS AND LIMITATIONS

JOURNAL OF ORGANIC CHEMISTRY, 43(26), 4975–4978.

By: H. Freeman*, . Butler & L. Freedman

Source: Web Of Science
Added: August 6, 2018

1978 journal article

Effects of the (+) and (-) enantiomers of 2-amino-6,7-dihydroxy-1,2,3,4-tetrahydronaphthalene on dopamine receptors and on dopamine uptake

British Journal of Pharmacology, 64(3), 433.

By: G. Andrews, A. Davis, H. Freeman, J. McDermed, J. Poat & G. Woodruff

Source: NC State University Libraries
Added: August 6, 2018

1976 article

SYNTHESIS AND DOPAMINERGIC ACTIVITY OF (+/-)-1,2,3,4-TETRAHYDRONAPHTHALENE, (+)-1,2,3,4-TETRAHYDRONAPHTHALENE, AND (-)-2-DIPROPYLAMINO-5-HYDROXY-1,2,3,4-TETRAHYDRONAPHTHALENE

JOURNAL OF MEDICINAL CHEMISTRY, Vol. 19, pp. 547–549.

By: J. Mcdermed, G. Mckenzie & H. Freeman*

MeSH headings : 2-Naphthylamine / analogs & derivatives; 2-Naphthylamine / chemical synthesis; 2-Naphthylamine / pharmacology; 8-Hydroxy-2-(di-n-propylamino)tetralin / analogs & derivatives; Animals; Dogs; Dopamine / physiology; Humans; Naphthols / chemical synthesis; Naphthols / pharmacology; Rats; Stereoisomerism; Stereotyped Behavior / drug effects; Structure-Activity Relationship; Vomiting / chemically induced
TL;DR: Dopaminergic activity was found to be confined to the levo enantiomer, and requirements for both substitution and chirality in the tetralines were found to correspond closely to those known for the dopaminergic aporphines. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

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