Fine Tuning of the Rotary Motion by Structural Modification in Light-Driven Unidirectional Molecular Motors
作者:Javier Vicario、Martin Walko、Auke Meetsma、Ben L. Feringa
DOI:10.1021/ja058303m
日期:2006.4.1
The introduction of bulky substituents at the stereogeniccenter of light-driven second-generation molecular motors results in an acceleration of the speed of rotation. This is due to a more strained structure with elongated C=C bonds and a higher energy level of the ground state relative to the transition state for the rate-limiting thermal isomerization step. Understanding the profound influence