Hierarchical Interactions and Their Influence upon the Adsorption of Organic Molecules on a Graphene Film

被引:54
作者
Roos, Michael [1 ]
Kuenzel, Daniela [2 ]
Uhl, Benedikt [1 ]
Huang, Hsin-Hui [1 ]
Alves, Otavio Brandao [1 ]
Hoster, Harry E. [1 ]
Gross, Axel [2 ]
Behm, R. Juergen [1 ]
机构
[1] Univ Ulm, Inst Catalysis & Surface Chem, D-89069 Ulm, Germany
[2] Univ Ulm, Inst Theoret Chem, D-89069 Ulm, Germany
关键词
SUPRAMOLECULAR ASSEMBLIES; FORCE-FIELD; SUBSTRATE; LAYERS; ADLAYERS; GRAPHITE; NETWORKS; GROWTH; RANGE;
D O I
10.1021/ja2025855
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The competition between intermolecular interactions and lateral variations in the molecule substrate interactions has been studied by scanning tunneling microscopy (STM), comparing the phase formation of (sub)-monolayers of the organic molecule 2,4'-BTP on buckled graphene/Ru(0001) and Ag(111) oriented thin films on Ru(0001). On the Ag films, the molecules form a densely packed 2D structure, while on graphene/Ru(0001), only the areas between the maxima are populated. The findings are rationalized by a high corrugation in the adsorption potential for 2,4'-BTP molecules on graphene/Ru(0001). These findings are supported by temperature programmed desorption (TPD) experiments and theoretical results.
引用
收藏
页码:9208 / 9211
页数:4
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