Efficient Synthesis and Properties of a Novel Unsymmetrical Photochromic Diarylethene Material Based on Pyrazolyl Group

An unsymmetrical diarylethene derivative was synthesized, and its photochromic properties and fluorescence switch were investigated in detail. The results showed that this compound exhibited reversible photochromism, undergoing reversible cyclization and cycloreversion reactions upon alternating irr...

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Bibliographic Details
Published inApplied Mechanics and Materials Vol. 164; pp. 280 - 283
Main Authors Jiang, Duo Hua, Liu, Wei Jun, Liu, Gang, Wang, Wei Ping
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.04.2012
Subjects
Fluorescence Switching
Diarylethene
Photochromism
Cyclization
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Summary:An unsymmetrical diarylethene derivative was synthesized, and its photochromic properties and fluorescence switch were investigated in detail. The results showed that this compound exhibited reversible photochromism, undergoing reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light both in solution and in PMMA film, and its absorption maxima were observed at 574 nm in hexane and at 579 nm in PMMA amorphous film, respectively, upon irradiation with 297 nm UV light. The diarylethene 1a in hexane solution exhibited relatively strong fluorescence at 413 nm when excited at 322 nm. The fluorscence intensity is highest at the concentration of 1.0×10-4 mol/L when excited at 322 nm.
Bibliography:Selected, peer reviewed papers from the 2012 2nd International Conference on Mechanical Engineering, Industry and Manufacturing Engineering (MEIME 2012), June 23-24, 2012, Hefei, China
ISBN:3037854103
9783037854105
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.164.280