Pronounced effects on switching efficiency of diarylcycloalkenes upon cycloalkene ring contraction
作者:Dmytro Sysoiev、Tetyana Yushchenko、Elke Scheer、Ulrich Groth、Ulrich E. Steiner、Thomas E. Exner、Thomas Huhn
DOI:10.1039/c2cc35726g
日期:——
Several difurylperfluorocyclobutenes showing reversible photochromism were synthesized. In comparison to their cyclopentene homologues they show enhanced quantum yields for ring opening but reduced quantum yields for ring closure. X-ray structure analysis and quantum chemical calculations provide a conclusive explanation for such a behaviour.
我们合成了几种具有可逆光致变色作用的二呋喃全氟环丁烯。与它们的环戊烯同系物相比,它们的开环量子产率提高了,但闭环量子产率降低了。X 射线结构分析和量子化学计算为这种行为提供了确凿的解释。