914360-26-2Relevant academic research and scientific papers
Electron-donating methoxyl group position effect on properties of diarylethene derivatives having a pyrazole unit
Yang, Tianshe,Pu, Shouzhi,Chen, Bing,Xu, Jingkun
, p. 12 - 20 (2007)
New types of asymmetrical photochromic diarylethene derivatives having a pyrazole unit, namely 1-[1,3,5-trimethyl-1-pyrazol-4-yl],2-[2-methyl-5-(4- methoxylphenyl)-1-thien-3-yl]perfluorocyclopentene (1a), 1-[1,3,5- trimethylpyrazol-4-yl],2-[2-methyl-5-(3-methoxylphenyl)-1-thien-3-yl] perfluorocyclopentene (2a), 1-[1,3,5-trimethyl-pyrazol-4-yl],2-[2-methyl-5-(2- methoxylphenyl)-1-thien-3-yl]perfluorocyclopentene (3a), and 1-[1,3,5-trimethyl-pyrazol-4-yl],2-[2-methyl-5-phenyl-1-thien-3-yl] perfluorocyclopentene (4a), were synthesized. Their optical and electrochemical properties, such as photochromism, photochromic cyclization-cycloreversion kinetics, and fluorescence and electrochemical properties were investigated in detail. The results show that all of these- compounds have good photochromism, high cycloreversion quantum yield, and relatively strong fluorescence. Their cyclization-cycloreversion processes were determined to be zeroth to first order reactions. The oxidations of diarylethenes 1a-4a were initiated at 0.73, 1.11, 0.79, and 1.03 V, respectively. Furthermore, introduction of the electron-donating methoxyl group at different positions of the terminal phenyl ring was found to strongly influence these optical and electrochemical properties.
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
The effect of substituent position upon unsymmetrical isomeric diarylethenes bearing a methoxy group
Pu, Shouzhi,Fan, Congbin,Miao, Wenjuan,Liu, Gang
experimental part, p. 25 - 35 (2010/10/21)
Three unsymmetrical isomeric photochromic diarylethenes bearing a methoxy group at either the para-, meta- or ortho-positions on one terminal benzene ring were synthesized and their optical and electrochemical properties investigated. Each of the compounds exhibited high photo-reactive sensitivity and functioned as a fluorescent photo-switch both in solution and in PMMA film. The molar absorption coefficients of both of the open-ring and closed-ring isomers decreased when the methoxy group was attached at any of the three positions on the terminal benzene ring whereas the cycloreversion quantum yield gradually increased in going from the para- to meta- to the ortho-position of substitution. Oxidation waves were clearly observed at 0.55, 0.74 and 0.58?V from cyclic voltammograms for some compounds but not for others at these voltages.
Synthesis and the effect of substituent position upon unsymmetrical isomeric diarylethenes bearing a pyrrole unit
Liu, Gang,Pu, Shouzhi,Wang, Xiaomei
experimental part, p. 230 - 240 (2010/11/05)
Four unsymmetrical diarylethenes bearing a pyrrole moiety were synthesized, and the structures of two isomeric compounds were determined by single-crystal X-ray diffraction analysis. The properties of these compounds, including photochromism, fluorescence
Photochromism of new unsymmetrical isomeric diarylethenes bearing a methoxyl group
Pu, Shouzhi,Liu, Weijun,Miao, Wenjuan
experimental part, p. 954 - 963 (2010/06/11)
Three new unsymmetrical isomeric diarylethenes having a methoxyl substituent at ortho-, meta-, and para-position of the terminal benzene ring, namely 1-(2,5-dimethyl-3-thienyl)-2-[2-methyl-5-(2-methoxylphenyl)-3-thienyl] perfluorocyclopentene (1o), 1-(2,5
Syntheses and properties of new photochromic diarylethene derivatives having a pyrazole unit
Pu, Shouzhi,Yang, Tianshe,Xu, Jingkun,Chen, Bing
, p. 6473 - 6477 (2007/10/03)
New photochromic diarylethenes 1a, 2a and 3a bearing a pyrazole unit have been synthesized. Their properties, including photochromic reactivity, fluorescence and electrochemical properties were investigated. These compounds showed good photochromic proper
