Selective adsorption behaviors of guest molecules COR in the hexamer host networks at liquid/solid interface  

作　　者：Xiaokang Li Jianqiao Li Chunyu Ma Chen Chen Siqi Zhang Bin Tu Wubiao Duan Qingdao Zeng 

机构地区：[1]CAS Key Laboratory of Standardization and Measurement for Nanotechnology,CAS Center for Excellence in Nanoscience,National Center for Nanoscience and Technology(NCNST),Beijing 100190,China [2]Department of Chemistry,School of Science,Beijing Jiaotong University,Beijing 100044,China [3]Center of Materials Science and Optoelectonics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Chemical Letters》2021年第3期1077-1080,共4页中国化学快报（英文版）

基　　金：supported by the National Basic Research Program of China(No.2016YFA0200700);the National Natural Science Foundation of China(Nos.21773041 and 21972031);the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDB36000000)。

摘　　要：Here,the selective adsorption behaviors of guest molecule COR in two hexamer host grids were investigated by means of scanning tunnelling microscope(STM).The assembled structures of small functional organic molecules TTBTA and TATBA were thermodynamically stable.Interestingly,the introduction of the guest molecule COR destroyed the original hexamer structure of TTBTA and combined with it to form a new triangular host-guest system.Different from TTBTA,the introduction of the guest molecule COR did not affect the six-membered ring structure of TATBA.Furthermore,the co-assembly structure of TTBTA/TATBA/COR was established and the guest molecule COR showed preferential adsorption to the TATBA host grid.Density functional theory(DFT)calculations had been performed to disclose the mechanism of the involved assemblies.

关 键 词：Scanning probemicroscopy(STM) Selective adsorption Host-guest chemistry Supramolecular chemistry Aromatic carboxylic acid 

分 类 号：O647.3[理学—物理化学]