Axle Length Does Not Affect Switching Dynamics in Degenerate Molecular Shuttles with Rigid Spacers
作者:Philip G. Young、Keiji Hirose、Yoshito Tobe
DOI:10.1021/ja412671k
日期:2014.6.4
For a series of [2]rotaxane molecular shuttles possessing linear rigid rod-like axles of varying lengths between degenerate recognition sites, the activation barrier for shuttling motion was clearly shown to be constant. Moreover, dynamic NMR studies have revealed that both the entropic and enthalpic contributions to the shuttling motion remain constant regardless of the actual length of the rigid
对于在简并识别位点之间具有不同长度的线性刚性棒状轴的一系列 [2] 轮烷分子穿梭机,穿梭运动的激活障碍清楚地显示为恒定的。此外,动态 NMR 研究表明,无论本文采用的刚性杆状轴的实际长度如何,对穿梭运动的熵和焓的贡献都保持不变。