Combination of fluorescent switch and electrochemical switch based on a photochromic diarylethene

摘要

A new photochromic diarylethene with oligothiophene side arm substituents has been synthesized.This diarylethene undergoes excellent photoisomerization with UV/Vis light irradiation,and shows fluorescence emission and electrochemical behavior.Both the fluorescence emission and oxidation/reduction potential are reversible based on the ring-opening and ring-closing photoisomerization of diarylethene with UV/Vis light irradiation,which may be used as a fluorescent and electrochemical switch.In addition,a combination of photochromism and electrochromism is observed for the diarylethene:the ring-closing reaction can be triggered by electrochemical oxidation while the ring-opening reaction must be photochemically driven.