Photoelectrocatalysis to Improve Cycloreversion Quantum Yields of Photochromic Dithienylethene Compounds
作者:Sumin Lee、Youngmin You、Kei Ohkubo、Shunichi Fukuzumi、Wonwoo Nam
DOI:10.1002/anie.201206256
日期:2012.12.21
9‐mesityl‐10‐methylacridinium ion, which acts as a photoredox catalyst, evoked catalytic cycloreversion of the photochromic 1,2‐dithienylethene (DTE) compounds with one order of magnitude enhancement in quantum yields. Mechanistic studies revealed that the back electron transfer and electron transfer from the neutral closed form of DTE compounds to the open‐form radical cation are key steps.
一个开闭的案例:作为光氧化还原催化剂的9-间苯甲基-10-甲基ac离子的光辐照引发了光致变色1,2-二噻吩基乙烯(DTE)化合物的催化环还原,量子产率提高了一个数量级。机理研究表明,背向电子转移和电子从DTE化合物的中性封闭形式向开放形式的自由基阳离子转移是关键步骤。