Research on Photochromic Materials with Synthesis and Properties of 1-(2-Methyl-3-benzothiophene)-2-[2-methyl-5-(3-cyanophenyl)-3-thienyl]perfluorocyclopentene

被引:0
作者
Liao, Guanming [1 ]
Zheng, Chunhong [1 ]
Pu, Shouzhi [1 ]
机构
[1] Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Peoples R China
来源
MECHANICAL ENGINEERING, MATERIALS AND INFORMATION TECHNOLOGY II | 2014年 / 662卷
关键词
Diarylethene; Photochromic; Fluorescence; Benzothiophene moiety; MOLECULAR SWITCHES; DIARYLETHENE; PHOTOCHEMISTRY;
D O I
10.4028/www.scientific.net/AMM.662.95
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
An asymmetrical photochromic diarylethene1-(2-Methyl-3-benzothiophene)-2-[2-methyl-5-(3-cyanophenyl)-3-thienyl]perfluorocyclopentene (1o) was synthesized and its phtochromic, fluorescent properties in both solution and PMMA films were investigated in detail. This compound exhibited remarkable photochromism, upon irradiation with 297 nm UV light, the colorless solution of 1o turned to violet with a new visible absorption band centered at 535 nm (epsilon = 1.08 x 10(4) L mol(-1) cm(-1)) attributable to the closed-ring isomer 1c. The emission intensity of diarylethene 1o in a photostationary state was quenched to ca. 32% in hexane and 43% in PMMA film.
引用
收藏
页码:95 / 98
页数:4
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