Selective formation of luminescent chiral cocrystal:Molecular self-assembly of 2,20-binaphthol and 2-(3-pyridyl)-1H-benzimidazole

作     者：Yanluo Lu Yanqun Tang Heyang Lin Xiaoyu Fang Bo Lu Dan Li Dongpeng Yan 

作者机构：State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical Technology Key Laboratory of Theoretical and Computational PhotochemistryMinistry of EducationCollege of ChemistryBeijing Normal University 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2018年第29卷第10期

页      面：1541-1543页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(NSFC, Nos. 21771021 and 21473013) the National Basic Research Program of China(973 Program, No. 2014CB932103) Beijing Municipal Natural Science Foundation (No. 2152016) 

主　　题：Chiral cocrystal Molecular self-assembly Binaphthol 

摘      要：Luminescent cocrystals have been received much attention in fluorescence imaging and sensor application. In this work, we report that the high-quality chiral luminescent cocrystal can be obtained through a molecular self-assembly process of 2,20-binaphthol and 2-（3-pyridyl）-1 H-benzimidazole. The assembly modes and stacking fashions of as-obtained cocrystal were determined by single crystal X-ray diffractometer. The structure and optical properties of the cocrystals were characterized by fluorescence emission, fluorescence decay, Raman and circular dichroism spectra. The results show that both the pristine co-assembled units（R-BINOL and S-BINOL） give rise to the R conformation within the final cocrystal, suggesting that the formation of cocrystal can be an effective way to achieve R/S-isomeric transformation of 2,20-binaphthol. It is also expected that the co-crystallization approach has much flexibility and potential applications for the design and selective formation of chiral luminescent materials.