Nelson Rodrigo Vinueza Benitez

Mass Spectrometry, Organic Chemistry, Analytical Chemistry, Dyes, Forensic Chemistry, Biofuels, Forensic Science, Instrumentation, Chromatography

Works (50)

Updated: December 12th, 2024 16:30

2024 journal article

Exploration of the binding determinants of protein phosphatase 5 (PP5) reveals a chaperone-independent activation mechanism

JOURNAL OF BIOLOGICAL CHEMISTRY, 300(7).

Source: Web Of Science
Added: December 9, 2024

2024 article

Protein-adaptive differential scanning fluorimetry using conformationally responsive dyes

Wu, T., Yu, J. C., Suresh, A., Gale-Day, Z. J., Alteen, M. G., Woo, A. S., … Gestwicki, J. E. (2024, May 14). NATURE BIOTECHNOLOGY, Vol. 5.

By: T. Wu*, J. Yu*, A. Suresh*, Z. Gale-Day*, M. Alteen*, A. Woo*, Z. Millbern n, O. Johnson* ...

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: June 3, 2024

2022 article

Quantification of docusate antimicrobial finishing after simulated landfill degradation via tandem mass spectrometry and QuEChERS extraction

Sui, X., Feng, C., Ankeny, M., & Vinueza, N. R. (2022, October 12). ANALYTICAL METHODS, Vol. 10.

MeSH headings : United States; Tandem Mass Spectrometry / methods; Chromatography, High Pressure Liquid / methods; Dioctyl Sulfosuccinic Acid; Anti-Infective Agents; Waste Disposal Facilities; Soil
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 20, 2022

2022 article

Synthetic dyes: A mass spectrometry approach and applications

Millbern, Z., Trettin, A., Wu, R., Demmler, M., & Vinueza, N. R. (2022, November 10). MASS SPECTROMETRY REVIEWS, Vol. 11.

author keywords: colorant analysis; dye identification; synthetic dyes; tandem mass spectrometry
Sources: Web Of Science, NC State University Libraries
Added: November 21, 2022

2022 article

The characterization of disperse dyes in polyester fibers using DART mass spectrometry

Millbern, Z., & Vinueza, N. R. (2022, September 4). JOURNAL OF FORENSIC SCIENCES, Vol. 9.

author keywords: ambient ionization; DART (direct analysis in real-time); disperse dyes; fibers; high-resolution mass spectrometry; polyester
MeSH headings : Coloring Agents / analysis; Polyesters / chemistry; Textiles / analysis; Mass Spectrometry
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: September 12, 2022

2021 article

Are all charge-transfer parameters created equally? A study of functional dependence and excited-state charge-transfer quantification across two dye families

Marshburn, R. D., Ashley, D. C., Curtin, G. M., Sultana, N., Liu, C., Vinueza, N. R., … Jakubikova, E. (2021, August 30). PHYSICAL CHEMISTRY CHEMICAL PHYSICS, Vol. 8.

By: R. Marshburn n, D. Ashley*, G. Curtin n, N. Sultana n, C. Liu n, N. Vinueza n, E. Ison n, E. Jakubikova n

TL;DR: A combined experimental and computational study of the excited-state electronic structure of twenty organic dyes obtained from the Max Weaver Dye Library at NCSU found that hybrid functionals with modest amounts of included Hartree-Fock exchange are the most effective at matching the experimentally determined λmax. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: September 20, 2021

2021 journal article

Identification and quantification of CI Reactive Blue 19 dye degradation product in soil

COLORATION TECHNOLOGY, 137(3), 251–258.

UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: January 22, 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.

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

Separation and identification of commercial reactive dyes with hydrophilic interaction liquid chromatography and quadrupole time‐of‐flight mass spectrometry

Coloration Technology, 137(4), 407–417.

UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: March 9, 2021

2020 journal article

A promising Ames battery for mutagenicity characterization of new dyes

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

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, NC State University Libraries, ORCID
Added: January 4, 2021

2020 journal article

Characterization of synthetic dyes for environmental and forensic assessments: A chromatography and mass spectrometry approach

Journal of Separation Science, 44(1), 387–402.

author keywords: chromatography; environmental studies; forensics; mass spectrometry; synthetic dyes
TL;DR: This review presents current chromatographic and mass spectrometric methods that are used for the detection and characterization of disperse-, acid-, basic-, and reactive dyes and their derivatives with high specificity and accuracy. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: December 11, 2020

2019 journal article

Degradation studies of CI Reactive Blue 19 on biodegraded cellulosic fabrics via liquid chromatography-photodiode array detection coupled to high resolution mass spectrometry

COLORATION TECHNOLOGY, 135(6), 475–483.

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: October 28, 2019

2019 journal article

Nanostructured GaOOH modified with reactive yellow, red and blue water-soluble dyes

AIP ADVANCES, 9(2).

Sources: Web Of Science, NC State University Libraries
Added: March 18, 2019

2019 journal article

Towards a reliable prediction of the aquatic toxicity of dyes

ENVIRONMENTAL SCIENCES EUROPE, 31(1).

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)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 21, 2019

2018 journal article

Correlation between solubility parameters and recovery of phenolic compounds from fast pyrolysis bio-oil by diesel extraction

Carbon Resources Conversion, 1(3), 238–244.

author keywords: Fast pyrolysis; Bio-oil; Diesel extraction; Hansel solubility parameter; Relative energy difference
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2018 journal article

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

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

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

2018 journal article

Direct analysis of textile dyes from trace fibers by automated microfluidics extraction system coupled with Q-TOF mass spectrometer for forensic applications

Forensic Science International, 289, 67–74.

By: N. Sultana n, S. Gunning n, S. Furst n, K. Garrard n, T. Dow n & N. Vinueza n

author keywords: Trace evidence; Textile fibers; Dyes; Microfluidics; Quadrupole-time-of-flight; Mass spectrometry
TL;DR: This study performed a direct trace fiber analysis method via dye characterization by a novel automated microfluidics device (MFD) dye extraction system coupled with a quadrupole-time-of-flight (Q-TOF) mass spectrometer (MS). (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 21, 2019

2018 journal article

Effects of hydrogen bonding on the gas-phase reactivity of didehydroisoquinolinium cation isomers

Physical Chemistry Chemical Physics, 20(33), 21567–21572.

TL;DR: Quantum chemical transition state calculations indicate that abstraction of a hydrogen atom from tetrahydrofuran by the 1,5-didehydroisoquinolinium cation occurs at the C-1 radical site and that the transition state is stabilized by hydrogen bonding. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, Crossref, NC State University Libraries
Added: October 19, 2018

2018 journal article

Mass Spectrometry Exposes Undocumented Lignin-Carbohydrate Complexes in Biorefinery Pretreatment Stream

ACS Sustainable Chemistry & Engineering, 6(8), 10654–10659.

By: K. Boes n, R. Narron n, S. Park n & N. Vinueza n

author keywords: Chloride attachment; Tandem mass spectrometry; Lignin-carbohydrate complex; Electrospray ionization; Autohydrolyzate; Biomass
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: July 21, 2019

2017 journal article

Purification and characterization of three commercial phenylazoaniline disperse dyes

Coloration Technology, 133(6), 513–518.

UN Sustainable Development Goal Categories
Sources: Crossref, NC State University Libraries
Added: July 21, 2019

2017 journal article

Rapid Quadrupole-Time-of-Flight Mass Spectrometry Method Quantifies Oxygen-Rich Lignin Compound in Complex Mixtures

JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 29(3), 535–542.

By: K. Boes n, M. Roberts & N. Vinueza n

author keywords: Quantitation; Complex mixtures; Quadrupole-time-of-flight; QTOF; Triple quadrupole; Electrospray ionization; Diesel; Bio-oil; Tandem mass spectrometry; Internal standard
TL;DR: It is demonstrated that a quadrupole-time-of-flight can be used for not only qualitative analysis but also targeted quantitation of oxygen-rich lignin molecules in complex mixtures without extensive sample preparation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
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

2016 journal article

Characterization of biofuel refinery byproduct via selective electrospray ionization tandem mass spectrometry

FUEL, 188, 190–196.

author keywords: Biomass pretreatment; Tandem mass spectrometry; Lignin; Oligosaccharides; Time-of-flight; Electrospray ionization
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 report

Microfluidic System for Automated Dye Molecule Extraction and Detection for Forensic Fiber Identification

[National Criminal Justice Report].

By: T. Dow, D. Hinks, K. Garrard, A. Sohn, S. Furst, M. Li, S. Gunning, N. Vinueza

Source: NC State University Libraries
Added: July 28, 2019

2016 report

The Art of Color in Solving Mysteries and Crime

[National Chemistry Week brochure]. American Chemical Society.

By: N. Benitez

Source: NC State University Libraries
Added: July 28, 2019

2015 journal article

Analysis of Sulfonated Anthraquinone Dyes by Electrospray Ionization Quadrupole Time-of-flight Tandem Mass Spectrometry

Journal of Textile Science & Engineering, 06(01).

By: M. Li & Y. Chen

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: July 21, 2019

2015 journal article

Functional dye as a comonomer in a water-soluble polymer

Journal of Polymer Science Part A: Polymer Chemistry, 53(13), 1594–1599.

By: W. Zhang, N. Vinueza, P. Datta & S. Michielsen*

author keywords: functionalization of polymers; graft copolymers; synthesis; UV-vis spectroscopy; water-soluble polymers
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Crossref, NC State University Libraries, ORCID
Added: July 21, 2019

2015 journal article

Reactivity Controlling Factors for an Aromatic Carbon-Centered sigma,sigma,sigma-Triradical: The 4,5,8-Tridehydroisoquinolinium Ion

CHEMISTRY-A EUROPEAN JOURNAL, 22(2), 809–815.

author keywords: gas-phase reactions; ion-molecule reactions; mass spectrometry; triradicals; structure-activity relationships
TL;DR: The triradical abstracted three hydrogen atoms in a consecutive manner from tetrahydrofuran (THF) and cyclohexane molecules; this demonstrates the presence of three reactive radical sites in this molecule. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Tandem mass spectrometric characterization of the conversion of xylose to furfural

Biomass and Bioenergy, 74, 1–5.

author keywords: Xylose; Furfural; Tandem mass spectrometry; Catalytic conversion; Maleic acid; C-13 labeling
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: July 21, 2019

2013 journal article

Analysis of xyloglucans by ambient chloride attachment ionization tandem mass spectrometry

Carbohydrate Polymers, 98(1), 1203–1213.

author keywords: Xyloglucans; Electrospray ionization; Chloride attachment; Tandem mass spectrometry; Hymenaea courbaril, Arabidopsis thaliana mur3; Sequencing
MeSH headings : Arabidopsis / genetics; Arabidopsis / metabolism; Chlorides / metabolism; Galactosyltransferases / genetics; Galactosyltransferases / metabolism; Glucans / chemistry; Glucans / metabolism; Hymenaea / metabolism; Mutation; Polymerization; Tandem Mass Spectrometry; Xylans / chemistry; Xylans / metabolism
TL;DR: The mass spectral profile of xyloglucans obtained for the mixtures matches the HPAEC results, thus validating this methodology for the determination of the xylglucan composition and the MW of each xylogucan. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: July 21, 2019

2013 journal article

Does the 2,6-didehydropyridinium cation exist?

Journal of Physical Organic Chemistry, 26(9), 707–714.

author keywords: Didehydrobenzene; FT-ICR; biradicals; ion-molecule reactions; reactive intermediates
TL;DR: The results suggest that a mixture of singlet (ground) state and triplet (excited) state 2,6-didehydropyridinium cations was generated and the two different states show qualitatively different reactivity, with the triplet state showing greater Brønsted acidity than that of the singlet state. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 21, 2019

2013 journal article

Experimental and Computational Studies on the Formation of Threepara-Benzyne Analogues in the Gas Phase

Chemistry - A European Journal, 19(27), 9022–9033.

author keywords: biradicals; distonic ions; ion-molecule reactions; para-benzyne; mass spectrometry; ring-opening
MeSH headings : Antibiotics, Antineoplastic / chemistry; Benzene Derivatives / chemistry; Cations; Fourier Analysis; Gases; Indicators and Reagents; Isomerism; Isoquinolines / chemistry; Mass Spectrometry / methods; Nitriles / chemistry; Pyridines / chemistry; Quantum Theory; Thermodynamics
TL;DR: A theoretical study on possible rearrangement reactions occurring during CAD revealed that the cation formed upon the first iodine atom loss undergoes ring-opening before the second iodine atom Loss to form an enediyne instead of a para-benzyne, which is in contradiction with an earlier report on this cation. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 21, 2019

2013 journal article

On-Line Mass Spectrometric Methods for the Determination of the Primary Products of Fast Pyrolysis of Carbohydrates and for Their Gas-Phase Manipulation

Analytical Chemistry, 85(22), 10927–10934.

By: M. Hurt*, J. Degenstein*, P. Gawecki*, D. Borton II, N. Vinueza*, L. Yang*, R. Agrawal*, W. Delgass*, F. Ribeiro*, H. Kenttämaa*

TL;DR: The primary fast pyrolysis products were determined to consist of only a handful of compounds that quickly polymerize to form anhydro-oligosaccharides when allowed to react at high temperatures for an extended period of time. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: July 21, 2019

2012 journal article

Analysis of carbohydrates by atmospheric pressure chloride anion attachment tandem mass spectrometry

Fuel, 105, 235–246.

author keywords: Oligosaccharides; Atmospheric pressure ionization; Atmospheric pressure chemical ionization; Chloride attachment; Tandem mass spectrometry; Bio-oil
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2012 journal article

Identification and Counting of Oxygen Functionalities and Alkyl Groups of Aromatic Analytes in Mixtures by Positive-Mode Atmospheric Pressure Chemical Ionization Tandem Mass Spectrometry Coupled with High-Performance Liquid Chromatography

Energy & Fuels, 26(5), 2975–2989.

By: L. Amundson*, V. Gallardo*, N. Vinueza*, B. Owen*, J. Reece*, S. Habicht*, M. Fu*, R. Shea*, A. Mossman*, H. Kenttämaa*

Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2012 journal article

Reactivity of a σ,σ,σ,σ-Tetraradical: The 2,4,6-Tridehydropyridine Radical Cation

Journal of the American Chemical Society, 134(4), 1926–1929.

MeSH headings : Cations / chemical synthesis; Cations / chemistry; Free Radicals / chemical synthesis; Free Radicals / chemistry; Molecular Structure; Pyridines / chemical synthesis; Pyridines / chemistry; Pyridinium Compounds / chemical synthesis; Pyridinium Compounds / chemistry
TL;DR: The 2,4,6-tridehydropyridine radical cation, an analogue of the elusive 1,2,3,5-tetradehydrobenzene, was generated in the gas phase and its reactivity examined, and surprisingly the tetraradical was found not to undergo radical reactions. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2012 journal article

Reactivity of the 4,5-Didehydroisoquinolinium Cation

Chemistry - A European Journal, 18(28), 8692–8698.

By: N. Vinueza*, E. Archibold*, B. Jankiewicz*, V. Gallardo*, S. Habicht*, M. Aqueel*, J. Nash*, H. Kenttämaa*

author keywords: biradicals; didehydronaphthalene; FT-ICR; ion-molecule reactions; reactive intermediates
TL;DR: This biradical was found to exclusively undergo radical reactions, as opposed to other related biradicals with nearby radical sites, and some ortho-benzynes have been found to yield similar products. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2012 journal article

Substituent Effects on the Nonradical Reactivity of 4-Dehydropyridinium Cation

The Journal of Physical Chemistry A, 116(12), 3089–3093.

MeSH headings : Cations; Electrons; Furans / chemistry; Hydrogen Bonding; Isomerism; Mass Spectrometry; Pyridinium Compounds / chemistry; Spectroscopy, Fourier Transform Infrared; Static Electricity
TL;DR: The gas-phase reactivities of the 4-dehydropyridinium cation and several of its derivatives toward tetrahydrofuran were investigated in a Fourier transform ion electron resonance mass spectrometer and both radical and nonradical reactions were observed. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2011 journal article

Comparison of Functional Group Selective Ion–Molecule Reactions of Trimethyl Borate in Different Ion Trap Mass Spectrometers

Journal of The American Society for Mass Spectrometry, 22(3), 520–530.

By: S. Habicht*, N. Vinueza*, L. Amundson* & H. Kenttämaa*

author keywords: Ion-molecule reactions; Functional groups; FTICR; LQIT; LTQ; CAD; HPLC/MS
TL;DR: A comparison of the use of diagnostic ion–molecule reactions for the identification of oxygen-containing functional groups in Fourier-transform ion cyclotron resonance (FTICR) and linear quadrupole ion trap (LQIT) mass spectrometers. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2011 journal article

Effects of a Hydroxyl Substituent on the Reactivity of the 2,4,6-Tridehydropyridinium Cation, an Aromatic σ,σ,σ-Triradical

Chemistry - A European Journal, 18(3), 969–974.

author keywords: FT-ICR; ion-molecule reactions; reactivity; substituent effects; triradicals
TL;DR: The reactsivity of 3-hydroxy-2,4,6-tridehydropyridinium cation was found to be drastically different from the reactivity of 2,4+, and this change in reactivity is caused by the hydroxyl group that strengthens the interactions between the two radical sites adjacent to it, thus reducing their reactivity. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: August 13, 2021

2010 journal article

Data-dependent neutral gain MS3: Toward automated identification of the N-Oxide functional group in drug metabolites

Journal of the American Society for Mass Spectrometry, 21(4), 559–563.

By: S. Habicht*, N. Vinueza*, P. Duan*, M. Fu* & H. Kenttämaa*

MeSH headings : Algorithms; Chromatography, High Pressure Liquid / methods; Oxides / analysis; Oxides / chemistry; Oxides / metabolism; Pattern Recognition, Automated / methods; Pharmaceutical Preparations / chemistry; Pharmaceutical Preparations / metabolism; Spectrometry, Mass, Electrospray Ionization / methods
TL;DR: An automated method for the identification of N-oxide functional groups in drug metabolites by using the combination of liquid chromatography/tandem mass spectrometry (LC/MSn) based on ion-molecule reactions and collision-activated dissociation (CAD). (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2009 journal article

Laser-Induced Acoustic Desorption Coupled with a Linear Quadrupole Ion Trap Mass Spectrometer

Analytical Chemistry, 82(2), 608–614.

By: S. Habicht*, L. Amundson*, P. Duan*, N. Vinueza* & H. Kenttämaa*

MeSH headings : Amino Acid Sequence; Angiotensin II / analogs & derivatives; Angiotensin II / analysis; Angiotensin II / chemistry; Enkephalin, Leucine / analysis; Enkephalin, Leucine / chemistry; Fourier Analysis; Ions / chemistry; Lasers; Mass Spectrometry / instrumentation; Mass Spectrometry / methods; Peptides / analysis; Peptides / chemistry
TL;DR: Despite the lower efficiency in the transfer of desorbed neutral molecules into the ion trap, and the smaller maximum number of available laser pulses, the intrinsically higher sensitivity of the LQIT resulted in a higher sensitivity relative to the FT-ICR. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2009 journal article

Liquid chromatography/tandem mass spectrometry utilizing ion-molecule reactions and collision-activated dissociation for the identification of N-oxide drug metabolites

Journal of Pharmaceutical and Biomedical Analysis, 51(4), 805–811.

By: S. Habicht*, P. Duan*, N. Vinueza*, M. Fu* & H. Kenttämaa*

author keywords: Liquid chromatography/mass spectrometry (LC/MS); Tandem mass spectrometry (MSn); N-oxide; Ion-molecule reactions; Structural elucidation
MeSH headings : Benzodiazepines / chemistry; Benzodiazepines / metabolism; Biotransformation; Buffers; Chromatography, High Pressure Liquid; Molecular Structure; Olanzapine; Oxides / chemistry; Oxides / metabolism; Reproducibility of Results; Spectrometry, Mass, Electrospray Ionization; Tandem Mass Spectrometry
TL;DR: A liquid chromatography/tandem mass spectrometry (LC/MS(3) method based on ion-molecule reactions and collision-activated dissociation (CAD) is presented for the identification of analytes with the N-oxide functional group directly in mixtures. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2008 journal article

Gas-Phase Reactivity of Aromatic σ,σ-Biradicals toward Dinucleoside Phosphates

Organic Letters, 10(10), 1889–1892.

MeSH headings : DNA; Dinucleoside Phosphates / chemistry; Free Radicals / chemistry; Gases / chemistry; Isoquinolines / chemical synthesis; Isoquinolines / chemistry; Lasers; Mass Spectrometry; Molecular Structure; Stereoisomerism
TL;DR: The results demonstrate that the structure of the sigma,sigma-biradical and the base sequence of the dinucleoside phosphate can have a major influence on these reactions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2008 journal article

Identification of the Carboxylic Acid Functionality by Using Electrospray Ionization and Ion−Molecule Reactions in a Modified Linear Quadrupole Ion Trap Mass Spectrometer

Analytical Chemistry, 80(9), 3416–3421.

By: S. Habicht*, N. Vinueza*, E. Archibold*, P. Duan* & H. Kenttämaa*

MeSH headings : Acetates / chemistry; Anti-Inflammatory Agents, Non-Steroidal / analysis; Anti-Inflammatory Agents, Non-Steroidal / chemistry; Borates / chemistry; Carboxylic Acids / analysis; Carboxylic Acids / chemistry; Cations, Monovalent; Ibuprofen / analysis; Ibuprofen / chemistry; Ketoprofen / analysis; Ketoprofen / chemistry; Methanol / chemistry; Naproxen / analysis; Naproxen / chemistry; Sodium / chemistry; Spectrometry, Mass, Electrospray Ionization / instrumentation; Spectrometry, Mass, Electrospray Ionization / methods
TL;DR: The applicability of this mass spectrometric method for pharmaceutical analysis was demonstrated for three nonsteroidal anti-inflammatory drugs: ibuprofen, naproxen, and ketoprofen. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2008 journal article

Reactivity of the 3,4,5-Tridehydropyridinium Cation-An Aromatic σ,σ,σ-Triradical

Angewandte Chemie, 120(51), 10008–10013.

Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2008 journal article

Reactivity of the 3,4,5-Tridehydropyridinium Cation-An Aromatic σ,σ,σ-Triradical

Angewandte Chemie International Edition, 47(51), 9860–9865.

author keywords: ion-molecule reactions; mass spectrometry; reaction mechanisms; reactivity; triradicals
Sources: Crossref, NC State University Libraries
Added: August 13, 2021

2008 journal article

Regioselective ion–molecule reactions for the mass spectrometric differentiation of protonated isomeric aromatic diamines

The Analyst, 133(4), 452.

By: M. Fu*, P. Duan*, S. Li*, S. Habicht*, D. Pinkston*, N. Vinueza*, H. Kenttämaa*

MeSH headings : Animals; Ions; Isomerism; Phenylenediamines / analysis; Tandem Mass Spectrometry / instrumentation; Tandem Mass Spectrometry / methods
TL;DR: A mass spectrometric method utilizing regioselective ion-molecule reactions has been developed for the differentiation of protonated isomeric aromatic diamines in FT-ICR, linear quadrupole ion trap and triple quadrupoles mass spectromaeters. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2007 journal article

Reactivity of an Aromatic σ,σ,σ-Triradical: The 2,4,6-Tridehydropyridinium Cation

Angewandte Chemie, 119(48), 9358–9361.

By: B. Jankiewicz*, A. Adeuya*, M. Yurkovich*, N. Vinueza*, S. Gardner*, M. Zhou*, J. Nash*, H. Kenttämaa*

Sources: Crossref, NC State University Libraries
Added: July 28, 2019

2007 journal article

Reactivity of an Aromatic σ,σ,σ-Triradical: The 2,4,6-Tridehydropyridinium Cation

Angewandte Chemie International Edition, 46(48), 9198–9201.

By: B. Jankiewicz*, A. Adeuya*, M. Yurkovich*, N. Vinueza*, S. Gardner*, M. Zhou*, J. Nash*, H. Kenttämaa*

author keywords: ion-molecule reactions; mass spectrometry; reactivity; triradicals
MeSH headings : Cyclotrons; Fourier Analysis; Free Radicals / chemistry; Kinetics; Mass Spectrometry; Pyridinium Compounds / chemistry
Sources: Crossref, NC State University Libraries
Added: August 13, 2021

Employment

Updated: September 8th, 2022 09:53

2020 - present

University of North Carolina NC, NC, US
Associate Professor Department of Chemistry

2019 - present

North Carolina State University Raleigh, NC, US
Associate Professor Textile Engineering, Chemistry, and Science

2013 - 2019

North Carolina State University Raleigh, NC, US
Assistant Professor Textile Engineering, Chemistry, and Science

2010 - 2012

Purdue University West Lafayette West Lafayette, Indiana, US
Post-Doctoral Fellow Department of Chemistry

Education

Updated: November 29th, 2016 19:56

2003 - 2010

Purdue University West Lafayette, IN, US
PhD Chemistry

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