Synthesis and the effect of alkyl chain length on photochromic properties of diarylethene derivatives

被引：5
|
作者：
Huang, Xiao-Qin [1 ]
Fan, Cong-Bin [1 ]
Liu, Gang [1 ]
Pu, Shou-Zhi [1 ]
机构：
[1] Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Jiangxi, Peoples R China
来源：
TETRAHEDRON | 2019年 / 75卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Photochromism; Diarylethene; Alkyl chain length; Pyrrole and thiophene units; FATIGUE; DITHIENYLETHENES; MEMORIES; SENSOR;
D O I：
10.1016/j.tet.2018.12.063
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A new class of photochromic diarylethenes bearing pyrrole and thiophene units with different length of alkyl chains at 2-position of thiophene rings have been synthesized. Their characteristics, including photochromism and fatigue resistance were investigated systematically, and each diarylethene derivative showed good photochromic properties whether in solution or in PMMA films. The alkyl group moiety was connected directly to the central cyclopentene ring as a heteroaryl unit and availably participated in photoisomerization reaction. And some properties, for example, the conversion ratio in the photostationary state(PSS) and the absorption coefficient of the ring-closed isomers in acetonitrile were significantly affected by the alkyl chain length. The results revealed that substituents of alkyl chain played an important role in the photoisomerization process of diarylethenes. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：784 / 790
页数：7
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