Construction and nanotribological study of a glassy covalent organic network on surface  

作　　者：Guangyuan Feng Qingqing Luo Mengqi Li Yaru Song Yongtao Shen Shengbin Lei Wenping Hu 

机构地区：[1]Tianjin Key Laboratory of Molecular Optoelectronic Sciences,Department of Chemistry,School of Science,Tianjin University&Collaborative Innovation Center of Chemical Science and Engineering,Tianjin 300072,China [2]School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China

出　　处：《Nano Research》2022年第5期4682-4686,共5页纳米研究（英文版）

基　　金：This work was financially supported by the National Science Foundation of China(Nos.52073208,21872103,and 51633006);the Ministry of Science and Technology of China(No 2016YFB0401100).

摘　　要：Unraveling the nature of complex condensed matter systems is of paramount importance in a variety of fields such as pharmacology and materials science.Here we report the synthesis,by the dynamic covalent chemistry(DCC),of a robust,continuous,and low-defect glassy covalent organic network(GCON).The direct imaging of the molecular structure clearly shows the amorphous nature of GCONs,which consists with the competing(nano)crystallite model,not Zachariasen continuous random networks(Z-CRN).Remarkably,the microscopic friction properties were measured on GCONs by atomic force microscopy(AFM),and the GCONs showed lower friction force in comparison with crystalline covalent organic frameworks(COFs).

关 键 词：atomic force microscopy glassy covalent organic networks(GcoN) nanotribological competing(nano)crystallite model scanningtunnelingmicroscopy 

分 类 号：O62[理学—有机化学]