工程分子晶体具有异常弱的结合力。

Engineering molecular crystals with abnormally weak cohesion.

机构信息

Department of Chemistry, Wilfrid Laurier University, Waterloo, Ontario N2L 3C5, Canada.

出版信息

Chem Commun (Camb). 2011 May 14;47(18):5163-5. doi: 10.1039/c1cc10866b. Epub 2011 Mar 30.

Abstract

Adding astutely placed methyl groups to hexaphenylbenzene increases molecular weight but simultaneously weakens key C-H···π interactions, thereby leading to decreased enthalpies of sublimation and showing that materials with abnormally weak cohesion can be made by identifying and then obstructing interactions that help control association.

摘要

巧妙地在六苯并苯上添加甲基基团会增加分子量，但同时也会削弱关键的 C-H···π 相互作用，从而导致升华焓降低，这表明通过识别有助于控制聚集的相互作用并加以阻碍，可以制造出具有异常弱结合力的材料。