氢键催化分子转子的客体控制

Guest control of a hydrogen bond-catalysed molecular rotor.

作者信息

Rushton Gregory T, Vik Erik C, Burns William G, Rasberry Roger D, Shimizu Ken D

机构信息

Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA.

出版信息

Chem Commun (Camb). 2017 Nov 16;53(92):12469-12472. doi: 10.1039/c7cc07672j.

DOI:10.1039/c7cc07672j

PMID:29105705

Abstract

Herein, the control of a molecular rotor using hydrogen bonding guests is demonstrated. With a properly positioned phenol substituent, the N-arylimide rotors can form an intramolecular hydrogen bond that catalyses the rotational isomerization process. The addition of the guests disrupts the hydrogen bond and raises the rotational barrier, slowing the rotation by two orders of magnitude.

摘要

在此，展示了利用氢键客体对分子转子的控制。通过适当定位的苯酚取代基，N-芳基酰亚胺转子可形成催化旋转异构化过程的分子内氢键。客体的加入会破坏氢键并提高旋转势垒，使旋转速度减慢两个数量级。