Article
Engineering, Environmental
Chu Chu, Shengye Jin, Richard Spinney, Dionysios D. Dionysiou, Haijun Zhang, Ruiyang Xiao
Summary: This article introduces the application of laser flash photolysis (LFP) in transient radical processes. By introducing the development process, principles, and compositions of LFP, comparing the specificity and suitability of different spectral modes, and discussing the generation, detection, and environmental implications of hydroxyl radicals, sulfate radicals, and reactive chlorine species, a critical review of the implementation of LFP for kinetic quantification and mechanism elucidation is conducted. The remaining challenges and future perspectives are highlighted.
Article
Biophysics
Yufan He, Mohammad Mahfuzul Haque, Dennis J. Stuehr, H. Peter Lu
Summary: By utilizing single-molecule fluorescence resonance energy transfer spectroscopy and a new imaging approach, researchers investigated the conformational states and fluctuation dynamics of nitric oxide synthase enzymes, discovering a new conformational state induced by calmodulin binding. These findings provide valuable insights into the mechanism of NOS electron transfer.
BIOPHYSICAL JOURNAL
(2021)
Article
Chemistry, Physical
Rosa Becerra, J. Pat Cannady, Robin Walsh
Summary: Time-resolved studies were conducted to determine the rate constants for the reaction between germylene and HCl. The reaction was studied in the gas phase at different temperatures, and quantum chemical calculations supported the proposed mechanism for the reaction. The results showed that the reaction proceeds through the formation of a weakly bound donor-acceptor complex.
Review
Cardiac & Cardiovascular Systems
Yoon Kyung Choi, Young-Myeong Kim
Summary: The interaction between CO and NO plays a crucial role in maintaining vascular homeostasis and regeneration by improving endothelial function and promoting cell-cell communication, thus sustaining the health of cardiovascular and neurovascular systems.
FRONTIERS IN CARDIOVASCULAR MEDICINE
(2021)
Article
Multidisciplinary Sciences
Muhammad Umair Tariq, Detlef Bahnemann, Faryal Idrees, Saman Iqbal, Fauzia Iqbal, Faheem K. Butt, Jeong Ryeol Choi, Muhammad Bilal
Summary: In this study, heterostructures of g-C3N4 and Nb2O5 were synthesized and their photocatalytic efficiency for H2 production was analyzed. The long lifetime of Nb2O5/g-C3N4 heterostructures supported increased H2 evolution, and the presence of methanol further enhanced the rate of H2 evolution.
Article
Environmental Sciences
Na Luo, Yanpeng Gao, Mei Wang, Xiaolin Niu, Guiying Li, Taicheng An
Summary: The study investigates the transformation mechanism and pathway of tonalide, a representative synthetic musk, under ultraviolet (UV) irradiation in water. It is found that tonalide undergoes rapid photochemical degradation through a new pivotal bi-radical acting as the initial active species. The main degradation by-product, photoenol, with higher bioconcentration than tonalide, is formed through the photoenolization of the bi-radicals.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Physical
Junhong Pang, Ziqi Deng, Shanshan Sun, Guanheng Huang, Guohui Zhang, Amjad Islam, Li Dang, David Lee Phillips, Ming-De Li
Summary: The excited state's relaxation of DPE, SP, and TS in nanocrystal/microcrystal suspensions is significantly accelerated compared to in solution, with SP showing the fastest decay rate and potentially being the best candidate for photoswitching devices. The acceleration of the excited state's evolution in nanocrystal/microcrystal suspensions is attributed to intermolecular interactions and space restriction of the crystal, providing new insights for the design of optical materials.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Xiongfei Gui, Wenbin Fan, Jiace Sun, Yongle Li
Summary: In this study, the thermal rate coefficients of a high dimensional chemical reaction were investigated using ring polymer molecular dynamics. The results showed excellent agreement with experimental data, even in the deep tunneling region. The use of the Cayley propagator accelerated the calculation process while maintaining high accuracy.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2022)
Article
Biochemistry & Molecular Biology
Oleg S. Sutormin, Elena V. Nemtseva, Dmitry V. Gulnov, Lev A. Sukovatyi, Yekaterina S. Tyrtyshnaya, Albert E. Lisitsa, Valentina A. Kratasyuk
Summary: This study aims to investigate the effects of viscous medium on the kinetic features of NAD(P)H:FMN-oxidoreductase from luminous bacteria (Red) in both a single enzyme assay and in coupling with bacterial luciferase (BLuc). Varying concentrations of glycerol and sucrose were used to alter the medium viscosity. The study found that the presence of BLuc increased Red activity at low concentrations of glycerol, while Red activity was suppressed in viscous medium without BLuc. The interaction between glycerol/sucrose and Red substrates was also investigated using absorption spectroscopy and molecular dynamics.
PHOTOCHEMISTRY AND PHOTOBIOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Rui Sun, Serge Ruccolo, Daniel L. Nascimento, Yangzhong Qin, Nathaniel Hibbert, Daniel G. Nocera
Summary: Triplet excited states of ketones can selectively abstract hydrogen atoms from amide N-H bonds without affecting weaker C-H bonds through a proton-coupled electron transfer pathway. This chemoselectivity arises from the asynchronicity between electron and proton transfer in the PCET process, which is determined by the differences in ionization energies of functional groups rather than bond dissociation energies. We demonstrate the application of this strategy in achieving intramolecular anti-Markovnikov hydroamidation of alkenes using camphorquinone as an inexpensive and sustainable photocatalyst.
Article
Biochemistry & Molecular Biology
Huayu Zheng, John M. Weaver, Changjian Feng
Summary: The study found that Hsp90 alpha can significantly increase superoxide generation from nNOS mu and nNOS alpha proteins under L-Arg-depleted conditions, and has varying effects on superoxide production by these two nNOS splice variants.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2021)
Article
Engineering, Environmental
Zekun Liu, Zhanghao Chen, Jinyu Gao, Yaochun Yu, Yujie Men, Cheng Gu, Jinyong Liu
Summary: The addition of iodide in the UV/sulfite system significantly accelerates the degradation of PFAS, improves reaction rates and removal efficiency, and enhances utilization of sulfite.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Veronika Pospisilova, David M. Bell, Houssni Lamkaddam, Amelie Bertrand, Liwei Wang, Deepika Bhattu, Xueqin Zhou, Josef Dommen, Andre S. H. Prevot, Urs Baltensperger, Imad El Haddad, Jay G. Slowik
Summary: The study reveals that atmospheric secondary organic aerosol undergoes chemical changes when exposed to UV radiation, resulting in mass loss of molecules which are photoactive. However, not all oxygen-containing compounds decay when exposed to UV radiation, and the reduction in volatility may be related to changes in functional groups or other physical parameters.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Namasivayam Dhenadhayalan, Angel Shaji Veeranepolian Selvi, Selvaraju Chellappan, Viruthachalam Thiagarajan
Summary: The dynamics of photoionization and photoinduced electron transfer of coumarin 450 in micelles were investigated in micro to femtosecond time domains using spectroscopy. The study found that ultrafast PET between amine and C450 can quench the fluorescence intensity and lifetime of C450.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2021)
Article
Chemistry, Physical
Francesco Rigodanza, Nadia Marino, Alessandro Bonetto, Antonio Marcomini, Marcella Bonchio, Mirco Natali, Andrea Sartorel
Summary: The cobalt substituted polyoxotungstate Co6 displays fast electron transfer kinetics to photogenerated Ru-III(bpy)(3)(3+), significantly faster than cobalt oxide nanoparticles. Mechanistic evidence suggests that the oxidation and transformation processes of Co6 under different pH conditions involve specific Co(II) aquo and hydroxo groups, and proceed through bimolecular kinetics or concerted proton electron transfer (CPET) mechanisms.
Article
Biochemistry & Molecular Biology
Yinghong Sheng, Linghao Zhong, Dahai Guo, Gavin Lau, Changjian Feng
JOURNAL OF INORGANIC BIOCHEMISTRY
(2015)
Article
Chemistry, Medicinal
Liqin Liu, Jingli Xu, Jianquan Yang, Changjian Feng, Yubin Miao
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2016)
Article
Biochemistry & Molecular Biology
Ashley B. McQuarters, Amy L. Speelman, Li Chen, Bradley O. Elmore, Weihong Fan, Changjian Feng, Nicolai Lehnert
JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY
(2016)
Article
Biochemistry & Molecular Biology
Juliana Huestis, Xixi Zhou, Li Chen, Changjian Feng, Laurie G. Hudson, Ke Jian Liu
JOURNAL OF INORGANIC BIOCHEMISTRY
(2016)
Article
Chemistry, Physical
Li Chen, Huayu Zheng, Wenbing Li, Wei Li, Yubin Miao, Changjian Feng
JOURNAL OF PHYSICAL CHEMISTRY A
(2016)
Article
Biochemistry & Molecular Biology
Jinghui Li, Huayu Zheng, Wei Wang, Yubin Miao, Yinghong Sheng, Changjian Feng
Article
Biochemistry & Molecular Biology
Jinghui Li, Huayu Zheng, Changjian Feng
FRONTIERS IN BIOSCIENCE-LANDMARK
(2018)
Article
Biochemistry & Molecular Biology
Andrei V. Astashkin, Jinghui Li, Huayu Zheng, Yubin Miao, Changjian Feng
JOURNAL OF INORGANIC BIOCHEMISTRY
(2018)
Article
Chemistry, Inorganic & Nuclear
Jing Yang, Dominic K. Kersi, Casseday P. Richers, Logan J. Giles, Ranjana Dangi, Benjamin W. Stein, Changjian Feng, Christopher R. Tichnell, David A. Shultz, Martin L. Kirk
INORGANIC CHEMISTRY
(2018)
Article
Biochemistry & Molecular Biology
Huayu Zheng, Jingxuan He, Jinghui Li, Jing Yang, Martin L. Kirk, Linda J. Roman, Changjian Feng
JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY
(2019)
Article
Biochemistry & Molecular Biology
Jinghui Li, Huayu Zheng, Changjian Feng
Article
Chemistry, Physical
Andrei Astashkin, Jinghui Li, Huayu Zheng, Changjian Feng
JOURNAL OF PHYSICAL CHEMISTRY A
(2019)
Article
Biophysics
Rui Yang, Xiu-Lin Fang, Qin Zhen, Qiu-Yun Chen, Changjian Feng
COLLOIDS AND SURFACES B-BIOINTERFACES
(2019)
Article
Chemistry, Medicinal
Jingli Xu, Changjian Fengb, Yubin Miao
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2017)
Article
Chemistry, Medicinal
Liqin Liu, Jingli Xu, Jianquan Yang, Changjian Feng, Yubin Miao
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2017)