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