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 modelcompound 1 (ΦE→Z 0.080), supporting a volume-conserving hula-twist (HT) mechanism during the photochemical E–Z isomerization.