1240152-11-7Relevant academic research and scientific papers
Polarization holographic optical recording based on a new photochromic diarylethene compound
Li, Hui,Pu, Shouzhi,Liu, Gang,Liu, Weijun,Yao, Baoli
, p. 234 - 240 (2010)
A new unsymmetrical photochromic diarylethene, namely1-[2-methyl-5-(p-N,N-dimethylaminophenyl)-3-thienyl]-2-[2-methyl-5-(3-methoxylphenyl)-3-thienyl] perfluorocyclopentene (1a), was synthesized. The compound showed good photochromism, high sensitivity and
Switchable Mesomeric Betaines Derived from Pyridinium-Phenolates and Bis(thienyl)ethane
Adams, J?rg,Dahle, Sebastian,Hübner, Eike G.,Lederle, Felix,Maus-Friedrichs, Wolfgang,Nagorny, Sven,Schmidt, Andreas,Udachin, Viktor,Weingartz, Thea
, p. 3178 - 3189 (2021)
Syntheses of push–pull substituted non-symmetric bis(thienyl)ethenes (BTEs) possessing a central perfluorocyclopentene core are described. The substituent effects of anisole, phenole, and phenolate as well as pyridine, pyridinium, and N-methylpyridinium substituents, joined through their 3- or 4-positions to the central BTE core, respectively, cover the range from very strongly electron-donating [σ(4-phenolate)=?1.00] to extremely strongly electron-withdrawing [σ(pyridinium-4-yl)=+2.57] in the title mesomeric betaines. The different isomers possessing 4-yl/4-yl, 4-yl/3-yl and 3-yl/3-yl substituents represent different combinations of conjugated and cross-conjugated partial structures and cause different spectroscopic properties. In addition, through-space conjugation between the 2- and 2′-position of the thiophenes can be observed which circumvents the charge-separation of through-bond cross-conjugation. The BTE possessing the push–pull chromophore consisting of 3-anisole and 4-pyridinium substituents (24) displays the best extinction coefficients within the series of compounds described here (?=33.8/15.7 L/mol ? cm), while the mesomeric betaine possessing an N-methylpyridinium-4-yl and a 4-phenolate substituent (29) displays considerable bathochromic shifts to λmax=724 nm in its closed form.
Syntheses and photochromism of new isomeric diarylethenes bearing an indole moiety
Zheng, Chunhong,Pu, Shouzhi,Pang, Zhiyi,Chen, Bing,Liu, Gang,Dai, Yanfeng
, p. 565 - 574 (2013/07/19)
Four new photochromic diarylethenes, each bearing an indole moiety, were synthesized and three of their structures were determined by single-crystal X-ray diffraction analysis. Under alternating irradiation with UV and visible light, the compounds showed
