Results 41 to 50 of about 33,034 (271)

Flipping the Switch: Fast Photoisomerization in a Confined Environment.

Journal of the American Chemical Society, 2018
Stimuli-responsive materials are vital for addressing emerging demands in the advanced technology sector as well as current industrial challenges.
D.E Williams, Corey R Martin, E. Dolgopolova, Anton Swifton, Danielle C. Godfrey, Otega A. Ejegbavwo, P. Pellechia, Mark D. Smith, N. Shustova   +8 more
semanticscholar   +1 more source

Chloro- and Dichloro-methylsulfonyl Nitrenes: Spectroscopic Characterization, Photoisomerization, and Thermal Decomposition

Molecules, 2018
Chloro- and dichloro-methylsulfonyl nitrenes, CH2ClS(O)2N and CHCl2S(O)2N, have been generated from UV laser photolysis (193 and 266 nm) of the corresponding sulfonyl azides CH2ClS(O)2N3 and CHCl2S(O)2N3, respectively.
Yang Yang, Xianxu Chu, Yan Lu, Manabu Abe, Xiaoqing Zeng   +4 more
doaj   +1 more source

Feedback-Control of Photoresponsive Fluid Interfaces

, 2017
Photoresponsive surfactants provide a unique microfluidic driving mechanism. Since their molecular shapes change under illumination and thereby affect surface tension of fluid interfaces, Marangoni flow along the interface occurs.
Grawitter, Josua, Stark, Holger
core   +1 more source

Structural Evidence of Photoisomerization Pathways in Fluorescent Proteins.

Journal of the American Chemical Society, 2019
Double-bond photoisomerization in molecules such as the green fluorescent protein (GFP) chromophore can occur either via a volume-demanding one-bond-flip pathway or via a volume-conserving hula-twist pathway.
Jeffrey Chang, M. Romei, S. Boxer
semanticscholar   +1 more source

Effect of a =X-NH-Fragment, (X = C, N), on Z/E Isomerization and ON/OFF Functionality of Isatin Arylhydrazones, ((Arylamino)Methylene)Indolin-2-Ones and Their Anions

Molecules, 2020
The subject of this work was the study of thermally and photochemically stimulated Z ↔ E isomerization and hydrazo ↔ azo tautomerism of Z- and E-isomers of isatin arylhydrazones and ((arylamino)methylene)indolin-2-ones and their anions. Using NMR, UV-Vis
Pavol Tisovský, Klaudia Csicsai, Jana Donovalová, Róbert Šandrik, Róbert Sokolík, Anton Gáplovský   +5 more
doaj   +1 more source

Excited-State Dynamics of All the Mono-cis and the Major Di-cis Isomers of β-Apo-8′-Carotenal as Revealed by Femtosecond Time-Resolved Transient Absorption Spectroscopy

Molecules, 2023
Cis isomers of carotenoids play important roles in light harvesting and photoprotection in photosynthetic bacteria, such as the reaction center in purple bacteria and the photosynthetic apparatus in cyanobacteria.
Kota Horiuchi, Chiasa Uragami, Ruohan Tao, Daisuke Kosumi, Richard J. Cogdell, Hideki Hashimoto   +5 more
doaj   +1 more source

Determining the Photoisomerization Quantum Yield of Photoswitchable Molecules in Solution and in the Solid State

Scientific Reports, 2017
Photoswitchable molecules are able to isomerize between two metastable forms through light stimuli. Originally being studied by photochemists, this type of molecule has now found a wide range of applications within physics, chemistry and biology.
Kati Stranius, Karl Börjesson
semanticscholar   +1 more source

Cyclic Photoisomerization of Azobenzene in Atomistic Simulations: Modeling the Effect of Light on Columnar Aggregates of Azo Stars

Molecules, 2021
This computational study investigates the influence of light on supramolecular aggregates of three-arm azobenzene stars. Every star contains three azobenzene (azo) moieties, each able to undergo reversible photoisomerization.
Markus Koch, Marina Saphiannikova, Olga Guskova   +2 more
doaj   +1 more source

Solution phase and surface photoisomerization of a hydrazone switch with long thermal half-life.

Journal of the American Chemical Society, 2019
Photoswitches can be employed for various purposes, with the half-life being a crucial parameter to optimize for the desired application. The switching of a photochromic hydrazone functionalized with a C6 alkyl thiolate spacer (C6 HAT) was characterized ...
Liqing Zheng, Sirun Yang, Jinggang Lan, Luzia Gyr, G. Goubert, H. Qian, I. Aprahamian, R. Zenobi   +7 more
semanticscholar   +1 more source

The Effect of Photoisomerization on the Antioxidant Properties of Sinapic Acid and Methyl Sinapate in Different Solvents: A DFT/TD-DFT Study

Antioxidants
The impact of photoisomerization on antioxidant properties holds significant implications for fields such as medicine, chemistry, and consumer products.
Lei Wang, Chaofan Sun, Lingling Wang
doaj   +1 more source