二芳基乙烯
光致变色
荧光
光化学
辐照
分子开关
噻吩
戒指(化学)
材料科学
吸收(声学)
化学
光学
分子
有机化学
核物理学
复合材料
物理
作者
Masakazu Morimoto,Ryota Kashihara,Katsuya Mutoh,Yoshihiro Kobayashi,Jiro Abe,Hikaru Sotome,Syoji Ito,Hiroshi Miyasaka,Masahiro Irie
出处
期刊:CrystEngComm
[The Royal Society of Chemistry]
日期:2016-01-01
卷期号:18 (38): 7241-7248
被引量:21
摘要
The photochromic and fluorescence properties of two diarylethene derivatives having benzo[b]thiophene S,S-dioxide groups were studied in the single-crystalline phase. The derivatives showed reversible photochromic reactions and turn-on mode photoswitching of fluorescence in solution as well as in the single-crystalline phase. Upon irradiation with UV light, the open-ring isomers in the crystals underwent cyclization reactions to produce fluorescent closed-ring isomers. The UV-irradiated crystals emitted green or yellow-green fluorescence and exhibited dichroism of their absorption and fluorescence spectra under linearly polarized light. Upon irradiation with visible light, the closed-ring isomers reverted to the open-ring isomers and the fluorescence of the crystals disappeared. The switching cycles could be repeated more than 50 times without detectable deterioration. Area-selective switching of the fluorescence in the single crystal was demonstrated by patterned light irradiation, suggesting potential applications of the photoswitchable fluorescent molecular crystals in optical memory and display devices.
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