The photochemical isomerization of cross-linked 1,3,5-tristyrylbenzene dendrimer with hula-twist mechanism
作者:Mayuko Uda、Atsuya Momotake、Tatsuo Arai
DOI:10.1016/j.tetlet.2005.03.015
日期:2005.4
5-tristyrylbenzene dendrimer 5 was synthesized to study the photochemical isomerization mechanism. On irradiation, 5 isomerized with the quantum yields (ΦE→Z) of 0.063, which was not very much different from that for a model compound 1 (ΦE→Z 0.080), supporting a volume-conserving hula-twist (HT) mechanism during the photochemical E–Z isomerization.
合成了一种交联的1,3,5-三苯乙烯基苯树枝状聚合物5,以研究其光化学异构化机理。上照射,5异构化与量子产率(Φ Ë → Ž 0.063),这是不是从一个模型化合物非常不同的1(Φ Ë → Ž 0.080),支持一个体积节约呼啦捻(HT)光化学E – Z异构化过程中的机理。