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

详细信息    查看全文

• 作者：Michael Roos ; Daniela K眉nzel ; Benedikt Uhl ; Hsin-Hui Huang ; Otavio Brandao Alves ; Harry E. Hoster ; Axel Gross ; R. J眉rgen Behm
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：June 22, 2011
• 年：2011
• 卷：133
• 期：24
• 页码：9208-9211
• 全文大小：834K
• 年卷期：v.133,no.24(June 22, 2011)
• ISSN：1520-5126

文摘

The competition between intermolecular interactions and lateral variations in the molecule鈥搒ubstrate interactions has been studied by scanning tunneling microscopy (STM), comparing the phase formation of (sub)monolayers of the organic molecule 2,4鈥?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鈥?BTP molecules on graphene/Ru(0001). These findings are supported by temperature programmed desorption (TPD) experiments and theoretical results.