Rational design of a visible-light photochromic diarylethene: a simple strategy by extending conjugation with electron donating groups

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2019,（4）
• 页码范围: 451-459
• 页数: 9页
• 语种: 英文

摘要

Photochromic diarylethenes have been widely used in many fields.However,their cyclization process must be induced by UV light.In this article,a simple strategy is developed by extending π-conjugation with electron donating groups.The modified dirylethene derivative can photocyclolize under 405-nm light with a good photochromic efficiency.Meanwhile,its absorption and moderate fluorescence can be switched effectively in both directions by visible lights (405 and 520 nm,respectively) in different solutions and in living cells.We believe that this simple method will become a versatile strategy for developing various dirylethylenes with visible-light photochromism.