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 stereogenic center 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
在光驱动的第二代分子马达的立体中心引入庞大的取代基导致旋转速度加快。这是由于具有拉长 C=C 键的更应变结构和相对于限速热异构化步骤的过渡态更高的基态能级。了解立体中心取代基的变化对光驱动分子马达的旋转速度的深远影响,使得迄今为止报道的最快的分子马达的发展成为可能。