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Photochromic Mechanism of Heterofused Benzopyran Derivatives

 

作者: Ping Fan,   Jingqiang Wei,   Aiping Zhu,   Yangfu Ming,   M.G. Fan,   Wenfeng Wang,   Side Yao,  

 

期刊: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals  （Taylor Available online 2000）
卷期: Volume 344, issue 1  

页码: 289-294

 

ISSN:1058-725X

 

年代: 2000

 

DOI:10.1080/10587250008023851

 

出版商: Taylor & Francis Group

 

关键词: photochromism;benzopyran;laser photolysis

 

数据来源: Taylor

 

摘要:

ABATRACT The photochromic behavior of 2-phenyl-2-(thien-2-yl)-2H-benzo [b]furano[3,2-f]benzopyran (1) and 2,2-diphenyl-2H-benzo[b] furano[3,2-f]benzopyran (2) was examined by the nanosecond laser photolysis and normal time scale analysis. The results showed that the thienyl group could stabilize the colored forms as compared with the phenyl group and both singlet and triplet states were involved in the formation of the colored forms.

 

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