Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 24, Pages 9208-9211Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja2025855
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- Deutsche Forschungsgemeinschaft via the Collaborative Research Centre [(SFB) 569]
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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.
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