Results 41 to 50 of about 4,883 (226)

2,2,4,6-Tetraaryl-2H-benzo[h]chromenes:The influence of electronic communication between aryl substituents on their photochromism [PDF]

, 2022
A series of photochromic 2,2,4,6-tetraaryl-2H-benzo[h]chromenes have been efficiently synthesised by two complementary strategies employing the condensation of 1,1,3-triarylprop-2-yn-1-ols with 4-substituted 1-naphthols and Suzuki cross-coupling ...
Jacquemin, Denis, Crossley, Daniel, Soltowska, Nicola, Rice, Craig, Gabbutt, Christopher D., Heron, B. Mark, Armitage, Georgina K., Rice, Craig R., Crossley, Daniel L., de Azevedo, Orlando D.C.C., Armitage, Georgina, Dobson, Rhianne, Gabbutt, Christopher, Aiken, Stuart, Orlando D.C.C. de Azevedo, B. Mark Heron, Denis Jacquemin, Stuart Aiken, Georgina K. Armitage, Daniel L. Crossley, Craig R. Rice, Christopher D. Gabbutt, Rhianne Dobson, Nicola Soltowska   +23 more
core   +1 more source

Photo‐Induced Stepwise Liquid Crystal Phase Transition Enabled by Hydrazone Photoswitch

Advanced Science, EarlyView.
A judiciously designed bistable hydrazone photoswitch enables a photo‐induced stepwise “order‐disorder” phase transition in liquid crystals. The linear‐to‐bent isomerization disrupts molecular packing, allowing precise tuning of phase transition temperatures.
Shijie Liu, Yuxin Zhou, Junwen Chen, Yexin Wang, Yiqiu Lv, Panjie Wang, Wenqi Yu, Gege Meng, Jiayi Yu, Chunhua Lin, Guo‐Hua Hu, Ruochen Lan   +11 more
wiley   +1 more source

Light‐Enhanced Chloride Transport by Thiourea‐Appended Molecular Motor

Angewandte Chemie, Volume 138, Issue 41, 5 October 2026.
A molecular motor functionalized with a thiourea anion‐binding motif mediates transmembrane chloride transport. Light irradiation enhances transport efficiency by populating a more active metastable isomer, which slowly equilibrates to the initial stable isomer.
Abhishek Mondal, Sander J. Wezenberg
wiley   +2 more sources

NMR studies of the polyphotochromic behaviour of biphotochromic compounds

International Journal of Photoenergy, 2004
NMR spectroscopy has been used to investigate the photochromism of four biphotochromic molecules in both the spirooxazine and naphthopyran families. The thermal evolution of photoproducts and their structural identification made it possible to observe ...
J. Berthet, S. Delbaere, V. Lokshin, A. Samat, J. C. Micheau, G. Vermeersch   +5 more
doaj   +1 more source

Photochromism of (E)-4-phenyl-1-(pyridine-2-ylmethylene)semicarbazide [PDF]

, 2012
Natural Science Foundation of Fujian Province [2010J01048]; National Natural Science Foundation of China [21021061, 20973136]; NFFTBS [J1030415]A photochromism molecule, (E)-4-phenyl-1-(pyridine-2-ylmethylene)semicarbazide (1), was reported ...
Fan, Weizhen, Zhang, Hui, Chen, Shui, Hu, Wangxia, Huang, Rongbin, Lin, Yiji, 章慧, Lin, Lirong, Ma, Jie   +8 more
core  

Efficient, Synthesis, Photochromism Properties of a Hybrid Diarylethene

, 2011
An unsymmetrical diarylethene derivative bearing both phenyl and thiophene moieties, in which a methoxyl group was substituted at the para-positions of the terminal phenyl ring, was synthesized.
Duo Hua Jiang, Shou Zhi Pu, Pei Jian Yan, Wei Jun Liu   +3 more
core   +1 more source

Near Infrared Photoswitching by Direct Excitation—A Next Frontier

Angewandte Chemie International Edition, EarlyView.
Molecular photoswitches finally enter the spectral realm of near‐infrared for their direct excitation. This minireview summarizes the current state‐of‐the‐art, the design principles for achieving such low‐energy light responsiveness, and the unique applications that are unlocked by it.
Diptiprava Sahoo, Elias Ciekalski, Henry Dube   +2 more
wiley   +1 more source

Disentangling Photochromism and Electrochromism by Blocking Hole Transfer at the Electrolyte Interface

, 2016
Disentangling Photochromism and Electrochromism by Blocking Hole Transfer at the Electrolyte ...
Parag Banerjee (1469926), Yang Wang (5921), Sungyeon Heo (3215979), Delia J. Milliron (1327317), Zhengning Gao (3215982), Omid Zandi (1317519), Jongwook Kim (1363050)   +6 more
core   +1 more source

Photochromism of a Spiropyran in Low-Temperature Matrices: Unprecedented Bidirectional Switching between a Merocyanine and an Allene Intermediate

, 2022
Photochromism of spiropyrans has attracted much attention due to its potential in many light-controlled system applications. However, several fundamental aspects regarding the structure, energetics, and mechanistic details of the transformations of ...
Pereira, Nelson A M, Nunes, Cláudio M, Fausto, Rui, Nelson A. M. Pereira, Cláudio M. Nunes, Rui Fausto   +5 more
core   +1 more source

Photochromic Nucleosides and Oligonucleotides

Angewandte Chemie International Edition, 2023
AbstractPhotochromism is a reversible phenomenon wherein a material undergoes a change in color upon exposure to light. In organic photochromes, this effect often results from light‐induced isomerization reactions, leading to alterations in either the spatial orientation or electronic properties of the photochrome.
Jörn Bargstedt, Martin Reinschmidt, Leon Tydecks, Theresa Kolmar, Christoph M. Hendrich, Andres Jäschke   +5 more
openaire   +2 more sources