Novel photochromic diarylethenes bearing an imidazole moiety

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• 作者：Valerii Z. Shirinian^a ; ^{shir@ioc.ac.ru" class="auth_mail" title="E-mail the corresponding author} ; Andrey G. Lvov^a ; Ekaterina Yu. Bulich^b ; Alexey V. Zakharov^a ; Mikhail M. Krayushkin^a
• 关键词：Photochromism ; Diarylethene ; Imidazole ; Thermal stability ; Quantum yield
• 刊名：Tetrahedron Letters
• 出版年：2015
• 出版时间：30 September 2015
• 年：2015
• 卷：56
• 期：40
• 页码：5477-5481
• 全文大小：1739 K

文摘

Novel photochromic diarylethenes based on a 2,3-diarylcyclopent-2-en-1-one core and containing imidazole residues as the aryl moiety were synthesized. The photochromic properties of the obtained compounds were investigated in acetonitrile and a comparative analysis with oxazole and thiophene containing diarylethenes was performed. It was found that introduction of imidazole derivatives as the aryl moiety led to a significant decrease in thermal stability and an increase in both photosensitivity (quantum yields) and the bathochromic shift of the absorption maxima of both isomers.