My watch list
my.chemeurope.com  
Login  

352 Newest Publications about the topic photochemical reaction

rss

You can refine your search further. Select from the filter options on the left to narrow down your results.

Synthesis of CF3-containing spiro-epoxyoxindoles via the Corey–Chaykovsky reaction of N-alkyl isatins with Ph2S+CH2CF3OTf−

29-May-2018 | Bin Cheng; Bing Zu; Yuntong Li; Cheng Tao; Chen Zhang; Renqi Wang; Yun Li; Hongbin Zhai, Organic & Biomolecular Chemistry, 2018

CF3-containing spiro-epoxyoxindoles were successfully prepared via the Corey–Chaykovsky reaction of N-alkyl isatins with the ylide generated from Ph2S+CH2CF3OTf− with almost exclusive diastereoselectivity. Further derivatizations of these spiro-epoxyoxindoles were explored via a photochemical ...

more

A QM/MM study of the initial excited state dynamics of green-absorbing proteorhodopsin

28-May-2018 | Veniamin A. Borin; Christian Wiebeler; Igor Schapiro, Faraday Discussions, 2018

The primary photochemical reaction of the green-absorbing proteorhodopsin is studied by means of a hybrid quantum mechanics/molecular mechanics (QM/MM) approach. The simulations are based on a homology model derived from the blue-absorbing proteorhodopsin crystal structure. The geometry of ...

more

Mechanism of photocatalytic water splitting with triazine-based carbon nitrides: insights from ab initio calculations for the triazine-water complex

28-May-2018 | Johannes Ehrmaier; Mikołaj Jan Janicki; Andrzej L. Sobolewski; Wolfgang Domcke, Physical Chemistry Chemical Physics, 2018

Polymeric carbon-nitride materials consisting of triazine or heptazine units have recently attracted vast interest as photocatalysts for water splitting with visible light. Adopting the hydrogen-bonded triazine-water complex as a model system, we explored the photochemical reaction mechanisms ...

more

Surfactant-Enhanced Photoisomerization and Photomechanical Response in Molecular Crystal Nanowires

16-Jan-2018 | Fei Tong; Mingyue Liu; Rabih O. Al-Kaysi; Christopher J. Bardeen, Langmuir, 2018

Dimethyl-2(3-anthracen-9-yl)allylidene)malonate (DMAAM) is a divinylanthracene derivative that photoisomerizes between its (E) and (Z) conformations. Crystalline nanowires composed of this molecule undergo a rapid coiling motion when exposed to visible light. In this paper, a variety of ...

more

Photo‐initiated Reduction of CO2 by H2 on Silica Surface

12-Jan-2018 | Chao Liu, Justin M. Notestein, Eric Weitz, Kimberly A. Gray, ChemSusChem, 2018

The reduction of CO2 is a promising route to produce valuable chemicals or fuels and create C‐neutral resource cycles. Many different approaches to CO2 reduction have been investigated, but the ability of vacuum UV (VUV) irradiation to cleave C‐O bonds has remained largely unexplored for use in ...

more

Direct observation of 4‐nitrophenyl disulfide produced from p‐nitrothiophenol in air by Raman spectroscopy

18-Dec-2017 | Yun Ling, Wen‐Chang Xie, Wei‐Li Wang, Meng‐Kai Li, Jing Tang, Guo‐Kun Liu, Run‐Wen Yan, De‐Yin Wu, Journal of Raman Spectroscopy, 2017

Abstract Taking the fingerprint characteristics of Raman spectroscopy, the dimerization of p‐nitrothiophenol (PNTP) to 4‐nitrophenyl disulfide in air was investigated, which could be accelerated by the external laser illumination. The dimerization was qualitatively confirmed by both mass ...

more

Chemical antagonism between photodynamic agents and chemotherapeutics: mechanism and avoidance

07-Nov-2017 | Qingshuo Meng; Jia Meng; Wei Ran; Jinghan Su; Yuguang Yang; Pengcheng Zhang; Yaping Li, Chemical Communication, 2017

We report a photochemical reaction-induced antagonism between the photodynamic agent (PS) and anti-cancer drugs during combined therapy. The annihilation of singlet oxygen and alkene-containing drugs into inactive drug hydroperoxides is responsible for the antagonism, and results in decreased ...

more

Breaking the Kasha Rule for More Efficient Photochemistry

09-Oct-2017 | Alexander P. Demchenko; Vladimir I. Tomin; Pi-Tai Chou, Chemical Reviews, 2017

This paper provides a systematic review and analysis of different phenomena that violate a basic principle, Kasha’s rule, when applied to photochemical reactions. In contrast to the classical route of ultrafast transition to the lowest energy excited state and photochemical reaction starting ...

more

Breaking the Kasha Rule for More Efficient Photochemistry

09-Oct-2017 | Alexander P. Demchenko; Vladimir I. Tomin; Pi-Tai Chou, Chemical Reviews, 2017

This paper provides a systematic review and analysis of different phenomena that violate a basic principle, Kasha’s rule, when applied to photochemical reactions. In contrast to the classical route of ultrafast transition to the lowest energy excited state and photochemical reaction starting ...

more

Dual Photochemical Reaction Pathway in Flavin-Based Photoreceptor LOV Domain: A Combined Quantum-Mechanics/Molecular-Mechanics Investigation

04-Oct-2017 | Setsuko Nakagawa; Oliver Weingart; Christel M. Marian, Journal of Physical Chemistry B, 2017

The primary photochemical reaction of the light, oxygen, and voltage (LOV) domain of the blue-light photosensor YtvA of Bacillus subtilis were investigated using high-level QM(DFT/MRCI)/MM methods. After blue-light excitation, the Sγ atom of the reactive cysteine forms a covalent bond with the ...

more

Page 1 From 36
Subscribe to e-mail updates relating to your search

You will receive via e-mail the latest search results matching your search criteria. This service is free of charge and can be cancelled at any time.

Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE