Works Published in 2016
Displaying works 61 - 80 of 254 in total
Sorted by most recent date added to the index first, which may not be the same as publication date order.
2016 journal article
15N Hyperpolarization of Imidazole-15N2 for Magnetic Resonance pH Sensing via SABRE-SHEATH
ACS Sensors, 1(6), 640–644.
Contributors: R. Shchepin *, D. Barskiy *, A. Coffey*, T. Theis* , F. Shi *, W. Warren *, B. Goodson *, E. Chekmenev *
author keywords: NMR; hyperpolarization; parahydrogen; imidazole; pH sensing; N-15; chemical shift
TL;DR:
15N-Imidazole SABRE-SHEATH hyperpolarization potentially enables pH sensing on scales ranging from peptide and protein molecules to living organisms.
(via Semantic Scholar)
doi.org (publisher)
Source: ORCID
Added: January 12, 2021
2016 journal article
Over 20%15N Hyperpolarization in Under One Minute for Metronidazole, an Antibiotic and Hypoxia Probe
Journal of the American Chemical Society, 138(26), 8080–8083.
Contributors: D. Barskiy *, R. Shchepin *, A. Coffey*, T. Theis* , W. Warren *, B. Goodson *, E. Chekmenev *
TL;DR:
The results significantly expand the range of molecular structures and sites amenable to hyperpolarization via low-cost parahydrogen-based methods and have powerful potential applications such as direct in vivo imaging of mechanisms of action or hypoxia sensing.
(via Semantic Scholar)
Source: ORCID
Added: January 12, 2021
2016 journal article
Hyperpolarization of Nitrogen-15 Schiff Bases by Reversible Exchange Catalysis with para-Hydrogen
Chemistry - A European Journal, 22(31), 10777–10781.
Contributors: A. Logan *, T. Theis* , J. Colell *, W. Warren * & S. Malcolmson *
author keywords: amino acids; homogeneous catalysis; imaging agents; iridium; NMR spectroscopy
TL;DR:
The substrate scope of SABRE, a recently introduced hyperpolarization method, is expanded to allow access to (15) N-enriched Schiff bases, which show fractional N polarization levels of up to 2 % while having only minimal (1) H enhancements.
(via Semantic Scholar)
Source: ORCID
Added: January 12, 2021
2016 journal article
Direct and cost-efficient hyperpolarization of long-lived nuclear spin states on universal 15N2-diazirine molecular tags
Science Advances, 2(3), e1501438–e1501438.
Contributors: T. Theis* , G. Ortiz*, A. Logan *, K. Claytor *, Y. Feng*, W. Huhn*, V. Blum *, S. Malcolmson *
MeSH headings : Diazomethane / chemistry; Electron Spin Resonance Spectroscopy; Magnetic Fields; Magnetic Resonance Spectroscopy; Models, Chemical; Nitrogen Isotopes / chemistry
TL;DR:
This work uses a recently developed method, SABRE-SHEATH, to directly hyperpolarize 15N 2 magnetization and long-lived 15N2 singlet spin order, with signal decay time constants of 5.8 and 23 minutes, respectively.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: January 12, 2021
2016 journal article
Accessing long lived 1H states via 2H couplings
Journal of Magnetic Resonance, 263, 108–115.
Contributors: Z. Zhou *, K. Claytor *, W. Warren * & T. Theis*
author keywords: Solution NMR; Long lived states; Ethylene; Deuterium
TL;DR:
It is shown that the remaining J-coupling between the two quadrupolar deuterium spins, JQQ, splits the conditions for optimally generating proton singlet states and sheds light on the coherent evolution during singlet-triplet conversion as well as on the incoherent evolution that causes relaxation.
(via Semantic Scholar)
Source: ORCID
Added: January 12, 2021
2016 journal article
Spectroscopic Evidence for the Two C–H-Cleaving Intermediates of Aspergillus nidulans Isopenicillin N Synthase
Journal of the American Chemical Society, 138(28), 8862–8874.
Contributors: E. Tamanaha *, B. Zhang *, Y. Guo *, W. Chang* , E. Barr*, G. Xing*, J. St Clair*, S. Ye *
MeSH headings : Aspergillus nidulans / enzymology; Kinetics; Oxidoreductases / chemistry; Oxidoreductases / metabolism; Oxygen / metabolism; Quantum Theory; Spectrum Analysis
TL;DR:
A combination of transient-state-kinetic and spectroscopic methods, together with the specifically deuterium-labeled substrates, are employed, to identify both C-H-cleaving intermediates, and the results show that they are high-spin Fe(III)-superoxo and high- spin Fe(IV)-oxo complexes, respectively, in agreement with published mechanistic proposals derived computationally from Baldwin's founding work.
(via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 11, 2021
2016 journal article
Effectiveness of Student-Generated Video as a Teaching Tool for an Instrumental Technique in the Organic Chemistry Laboratory
Journal of Chemical Education, 93(1), 141–145.
author keywords: Second-Year Undergraduate; Organic Chemistry; Collaborative/Cooperative Learning; Internet/Web-Based Learning; Multimedia-Based Learning; Instrumental Methods; Laboratory Equipment/Apparatus; Student-Centered Learning; TA Training/Orientation; Computer-Based Learning
UN Sustainable Development Goal Categories
4. Quality Education
(Web of Science; OpenAlex)
Source: ORCID
Added: December 18, 2020
2016 journal article
Histidine-Directed Arylation/Alkenylation of Backbone N–H Bonds Mediated by Copper(II)
Journal of the American Chemical Society, 138(24), 7472–7475.
MeSH headings : Alkenes / chemistry; Boronic Acids / chemistry; Catalysis; Copper / chemistry; Histidine / chemistry; Hydrocarbons, Aromatic / chemistry; Hydrogen Bonding; Models, Molecular; Nitrogen / chemistry; Oxidation-Reduction; Thyrotropin-Releasing Hormone / chemistry
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation
(OpenAlex)
Source: ORCID
Added: December 16, 2020
2016 book
Chapter 10: Multi-functional hemoglobin dehaloperoxidases
In RSC Metallobiology (pp. 218–244).
Contributors: S. Franzen n, R. Ghiladi n , L. Lebioda* & J. Dawson*
TL;DR:
An overview of the peroxidase function of DHP is presented, and the mechanism of the oxidative dehalogenation reaction carried out by this enzyme when initiated from both the ferric and oxyferrous states by the addition of hydrogen peroxide is described.
(via Semantic Scholar)
Source: ORCID
Added: December 15, 2020
2016 journal article
Direct observation of triplet energy transfer from semiconductor nanocrystals
Science, 351(6271), 369–372.
Contributors: C. Mongin n, S. Garakyaraghi n, N. Razgoniaeva*, M. Zamkov * & F. Castellano n
TL;DR:
It is demonstrated by transient absorption spectroscopy that cadmium selenide semiconductor nanoparticles, selectively excited by green light, engage in interfacial Dexter-like triplet-triplet energy transfer with surface-anchored polyaromatic carboxylic acid acceptors, extending the excited-state lifetime by six orders of magnitude.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: December 15, 2020
2016 journal article
Homogeneous Photocatalytic H2 Production Using a RuII Bathophenanthroline Metal-to-Ligand Charge-Transfer Photosensitizer
ChemPlusChem, 81(10), 1016–1016.
TL;DR:
This month's cover picture illustrates the absorption of visible light by a ruthenium bathophenanthroline MLCT chromophore followed by a sequence of electron transfer steps that ultimately leads to the efficient production of hydrogen gas from water.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation
(OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 15, 2020
2016 journal article
Cover Picture: Homogeneous Photocatalytic H2 Production Using a RuII Bathophenanthroline Metal-to-Ligand Charge-Transfer Photosensitizer (ChemPlusChem 10/2016)
ChemPlusChem, 81(10), 1015–1015.
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation
(OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 15, 2020
2016 journal article
Magnetic resonance of spinons in quantum magnets
Physics-Uspekhi, 59(6), 564–570.
Contributors: A. Smirnov*
author keywords: spin chains; magnetic resonance; antiferromagnets; quantum magnets
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: December 4, 2020
2016 journal article
Dramatic Effect of the Electrostatic Parameters on H2 Sorption in an M-MOF-74 Analogue
Crystal Growth & Design, 16(2), 867–874.
Sources: Crossref, NC State University Libraries
Added: October 4, 2020
2016 journal article
Hybrid Ultra-Microporous Materials for Selective Xenon Adsorption and Separation
Angewandte Chemie International Edition, 55(29), 8285–8289.
author keywords: chromium; hybrid ultra-microporous materials; metal-organic frameworks; separations; xenon
TL;DR:
It is shown that an underexplored class of porous materials called hybrid ultra-microporous materials (HUMs) affords new benchmark selectivity for Xe separation from Xe/Kr mixtures.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Crossref, NC State University Libraries
Added: October 4, 2020
2016 journal article
Tuning Pore Size in Square-Lattice Coordination Networks for Size-Selective Sieving of CO2
Angewandte Chemie International Edition, 55(35), 10268–10272.
author keywords: CO2 separation; gas sorption; molecular sieving effect; stability; supramolecular isomerism
TL;DR:
Qc-5-Cu-sql-β, a narrow pore polymorph of the square lattice (sql) coordination network Qc- 5- Cu- SQL-α, adsorbs CO2 while excluding both CH4 and N2 and is stable to moisture and its separation performance is unaffected by humidity.
(via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: October 4, 2020
2016 journal article
Benchmark C 2 H 2 /CO 2 and CO 2 /C 2 H 2 Separation by Two Closely Related Hybrid Ultramicroporous Materials
Chem, 1(5), 753–765.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Crossref, NC State University Libraries
Added: October 4, 2020
2016 journal article
Crystal Engineering of a 4,6-c fsc Platform That Can Serve as a Carbon Dioxide Single-Molecule Trap
Crystal Growth & Design, 16(2), 1071–1080.
Sources: Crossref, NC State University Libraries
Added: September 19, 2020
2016 journal article
Exceptional H2 sorption characteristics in a Mg2+-based metal–organic framework with small pores: insights from experimental and theoretical studies
Physical Chemistry Chemical Physics, 18(3), 1786–1796.
TL;DR:
An extremely high rotational barrier was calculated for H2 sorbed at the most favorable site in α-[Mg3(O2CH)6] (81.59 meV), which is currently the highest yet for a neutral MOF.
(via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: September 19, 2020
2016 journal article
Crystal engineering of a family of hybrid ultramicroporous materials based upon interpenetration and dichromate linkers
Chemical Science, 7(8), 5470–5476.
Sources: Crossref, NC State University Libraries
Added: September 19, 2020
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