Axle Length Does Not Affect Switching Dynamics in Degenerate Molecular Shuttles with Rigid Spacers

作者：Young Philip G; Hirose Keiji^*; Tobe Yoshito

来源：Journal of the American Chemical Society, 2014, 136(22): 7899-7906.

DOI：10.1021/ja412671k

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 rod-like axles employed herein.

• 出版日期2014-6-4