Thickness-Dependent Adsorption of Melamine on Cu/Au(111) Films

doi:10.1021/acs.jpcc.7b00938

CORC > 北京大学 > 化学与分子工程学院

	Thickness-Dependent Adsorption of Melamine on Cu/Au(111) Films
	Wang, Li ; Li, Pai ; Shi, Hexia ; Li, Zhenyu ; Wu, Kai ; Shao, Xiang
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2017
关键词	SCANNING-TUNNELING-MICROSCOPY ORGANIC COORDINATION NETWORKS TOTAL-ENERGY CALCULATIONS AUGMENTED-WAVE METHOD AU(111) SURFACE CU ADLAYERS BASIS-SET METAL ALLOY GROWTH
DOI	10.1021/acs.jpcc.7b00938
英文摘要	Supported metal films represent a model binary metallic system wherein the surface properties can be finely tuned with the composition/thickness of the film. Thus, it has raised increasing research interests from various aspects. In this work, the adsorption and assembly behavior of melamine on the Cu films grown on the (22 x root 3) reconstructed Au(111) substrate were investigated as a function of Cu thickness. The atomically resolved scanning tunneling microscopy (STM) images in combination with density functional theory (DFT) calculations reveal that the ultrathin submonolayer copper film forms a pseudomorphic (1 x 1) lattice by agglomerating at the subsurface, while the true Cu adlayers start to appear on the three-layer thick films and hold the bulk Cu(111) lattice. Correspondingly, the adsorption and assembly of the melamine molecules significantly differ from those on pure metals, experiencing a gradual transformation from physisorption to chemisorption assemblies with the Cu film thickening. These findings shed light on the self-assembly behavior of organics on binary metallic surfaces. In addition, the evaporated metal films also register a diversified substrate for tuning the properties of adsorbed molecular films.; NSFC [91545128, 21333001, 91527303, 21421063, 91227117]; MOST [2011CB808702]; Fundamental Research Funds for the Central Universities; Thousand Talent Program for Young Outstanding Scientists of the Chinese government; Chinese Academy of Sciences [XDB01020100]; SCI(E); ARTICLE; 14; 7977-7984; 121
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/474012]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang, Li,Li, Pai,Shi, Hexia,et al. Thickness-Dependent Adsorption of Melamine on Cu/Au(111) Films[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2017.
APA	Wang, Li,Li, Pai,Shi, Hexia,Li, Zhenyu,Wu, Kai,&Shao, Xiang.(2017).Thickness-Dependent Adsorption of Melamine on Cu/Au(111) Films.JOURNAL OF PHYSICAL CHEMISTRY C.
MLA	Wang, Li,et al."Thickness-Dependent Adsorption of Melamine on Cu/Au(111) Films".JOURNAL OF PHYSICAL CHEMISTRY C (2017).