| 三聚氰胺与蜜勒胺在Au (111)表面的自组装和氢键识别 |
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| 作者单位： | 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 |
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| 基金项目： | the National Natural Science Foundation of China(91227117，21333001，91545128) |
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| 摘 要： |
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| 关 键 词： | 三聚氰胺 蜜勒胺 Au (111) 扫描隧道显微镜 氢键 自组装 |
| 收稿时间： | 2016-10-28 |
Identifying the Hydrogen Bonding Patterns of Melamine and Melem Self-Assemblies on Au(111) Surface |
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| Li WANG,He-Xia SHI,Wen-Yuan WANG,Hong SHI,Xiang SHAO. 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 |
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| Authors: | Li WANG He-Xia SHI Wen-Yuan WANG Hong SHI Xiang SHAO |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | Melamine Melem Au(111) Scanning tunneling microscopy Hydrogen bond Selfassembly |
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