物理化学学报2017，Vol.33Issue(2)：393-398,6.DOI:10.3866/PKU.WHXB201611033
三聚氰胺与蜜勒胺在Au(111)表面的自组装和氢键识别
Identifying the Hydrogen Bonding Patterns of Melamine and Melem Self-Assemblies on Au(111) Surface
摘要
Abstract
Melamine and melem molecules are widely used precursors for synthesizing graphitic carbon nitride (g-C3N4),the latter also a hot two-dimensional material with photocatalytic applications.The molecular structures of both are respectively identical to the repeating units of two distinct g-C3N4 phases.In this work,the adsorption and self-assembly of melamine and melem on an Au(111) surface were investigated with low-temperature scanning tunneling microscopy (STM).Particularly,the patterns of hydrogen bonds (HBs) in their assemblies were identified and compared.It was found that melamine can only form one type of HB and two kinds of assembly structures,whereas melem can form three types of HBs and six kinds of assembly structures in total.Moreover,the involved HBs can be transformed by tip manipulation.These findings may provide a new strategy for tuning the functionality of surface self-assemblies by manipulating intermolecular hydrogen bonds.This also paves a route for the in situ synthesis of g-C3N4 on metallic surfaces and subsequent investigations of their physicochemical properties.关键词
三聚氰胺/蜜勒胺/Au(111)/扫描隧道显微镜/氢键/自组装Key words
Melamine/Melem/Au(111)/Scanning tunneling microscopy/Hydrogen bond/Self-assembly分类
化学化工引用本文复制引用
王利,石何霞,王文元,施宏,邵翔..三聚氰胺与蜜勒胺在Au(111)表面的自组装和氢键识别[J].物理化学学报,2017,33(2):393-398,6.基金项目
The project was supported by the National Natural Science Foundation of China (91227117,21333001,91545128).国家自然科学基金(91227117,21333001,91545128)资助项目 （91227117,21333001,91545128）
