Results 11 to 20 of about 107,082 (295)
Improving the Luminescence and Stability of Carbon-Centered Radicals by Kinetic Isotope Effect [PDF]
The kinetic isotope effect (KIE) is beneficial to improve the performance of luminescent molecules and relevant light-emitting diodes. In this work, the influences of deuteration on the photophysical property and stability of luminescent radicals are ...
Zhichao Ma +3 more
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Extraordinarily large kinetic isotope effect on alkene hydrogenation over Rh-based intermetallic compounds [PDF]
A series of Rh-based intermetallic compounds supported on silica was prepared and tested in alkene hydrogenation at room temperature. H2 and D2 were used as the hydrogen sources and the kinetic isotope effect (KIE) in hydrogenation was studied.
Shinya Furukawa +3 more
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Strong inverse kinetic isotope effect observed in ammonia charge exchange reactions [PDF]
Inverse kinetic isotope effects (KIEs) are rarely observed. Here, the authors report an inverse KIE in the charge transfer reaction of $${{\rm{Xe}}}^{+}$$ Xe+ with ammonia.
L. S. Petralia +4 more
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Anomalously large kinetic isotope effect
AbstractActivated diffusion of water between macromolecules in swollen cellulose is accompanied by anomalously high kinetic isotope effects of oxygen. The separation factor of heavy-oxygen water (H218O /H216O) is thousands of permilles instead of tens of permilles according to modern Absolute Rate Theory.
Krinkin David
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Elucidating protonation pathways in CO2 photoreduction using the kinetic isotope effect [PDF]
The surge in anthropogenic CO2 emissions from fossil fuel dependence demands innovative solutions, such as artificial photosynthesis, to convert CO2 into value-added products.
Shikang Yin +7 more
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Advances in Kinetic Isotope Effect Measurement Techniques for Enzyme Mechanism Study [PDF]
Kinetic isotope effects (KIEs) are a very powerful tool for investigating enzyme mechanisms. Precision of measurement is the most important factor for KIE determinations, especially for small heavy atom KIEs.
Hong Gu, Shuming Zhang
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Analysis of nitrogen isotope fractionation effects is useful for tracing biogeochemical nitrogen cycle processes. Nitrification can cause large nitrogen isotope effects through the enzymatic oxidation of ammonia (NH3) via nitrite (NO2−) to nitrate (NO3−)
Shurong Liu +5 more
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Tunneling of Hydrogen and Deuterium Atoms on Interstellar Ices (Ih and ASW)
Model calculations are performed to investigate the kinetic isotope effect of hydrogen and deuterium atom diffusion on hexagonal ice and amorphous solid water. Comparisons with experimental results by Kuwahata et al. (Phys. Rev. Lett., Sep. 2015, 115 (13)
Gunnar Nyman
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We determined the kinetic isotope effect on the serine hydroxymethyltransferase reaction (SHMT), which provides important C1 metabolites that are essential for the biosynthesis of DNA bases, O-methyl groups of lignin and methane. An isotope effect on the
Gerd Gleixner
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Recently, increasing attention has been paid to quantum mechanical behavior in biology. In this study, we investigated the involvement of quantum mechanical tunneling in the hydrogen-transfer reaction from Trolox, a water-soluble analog of vitamin E (α ...
Ikuo Nakanishi +3 more
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