三聚氰胺与蜜勒胺在Au (111)表面的自组装和氢键识别

引用本文: 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. doi: 10.3866/PKU.WHXB201611033 shu

Citation: WANG Li, SHI He-Xia, WANG Wen-Yuan, SHI Hong, SHAO Xiang. Identifying the Hydrogen Bonding Patterns of Melamine and Melem Self-Assemblies on Au(111) Surface[J]. Acta Physico-Chimica Sinica, 2017, 33(2): 393-398. doi: 10.3866/PKU.WHXB201611033 shu

三聚氰胺与蜜勒胺在Au (111)表面的自组装和氢键识别

王利 ^1, ,
石何霞 ^1, ,
王文元 ^1, ,
施宏 ^1, ,
邵翔 ^1,2,

1.
中国科学技术大学化学物理系, 中国科学院城市污染物转化重点实验室, 合肥 230026;
2.
中国科学技术大学量子信息与量子科技前沿协同创新中心, 合肥 230026
基金项目:
国家自然科学基金（91227117，21333001，91545128）资助项目

摘要: 三聚氰胺和蜜勒胺（即三聚氰胺的三聚体）均为合成石墨型氮化碳（g-C₃N₄）的前驱体分子，具有与不同相g-C₃N₄的结构基元类似的骨架结构。本文利用低温扫描隧道显微镜（STM）对比研究了三聚氰胺与蜜勒胺在Au（111）表面上的自组装结构，并对两种分子可能形成的氢键类型进行识别。研究发现，三聚氰胺在表面上仅有一种氢键方式，形成两种组装结构；而蜜勒胺却可以形成三种类型的氢键，并组装成六种有序结构，而且不同类型的氢键在表面的比例随着分子在表面覆盖度的变化而变化。特别的，有些氢键类型之间可以在探针作用下发生转变。这些研究结果将为利用氢键构建和调控表面功能性纳米结构提供新方法，同时也为研究g-C₃N₄的表面原位合成及相关理化性质打下基础。

关键词:

English

Identifying the Hydrogen Bonding Patterns of Melamine and Melem Self-Assemblies on Au(111) Surface

1.
Department of Chemical Physics, CAS Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China, Hefei 230026, P. R. China;
2.
Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, P. R. China
Received Date: 28 October 2016
Revised Date: 02 November 2016
Fund Project:
The project was supported by the National Natural Science Foundation of China (91227117, 21333001, 91545128).

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.

Key words:

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三聚氰胺与蜜勒胺在Au (111)表面的自组装和氢键识别

English

Identifying the Hydrogen Bonding Patterns of Melamine and Melem Self-Assemblies on Au(111) Surface

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

三聚氰胺与蜜勒胺在Au (111)表面的自组装和氢键识别

English

Identifying the Hydrogen Bonding Patterns of Melamine and Melem Self-Assemblies on Au(111) Surface

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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