Density-Dependent Reorientation and Rehybridization of Chemisorbed Conjugated Molecules for Controlling Interface Electronic Structure

作者：Broeker B^*; Hofmann O T; Rangger G M; Frank P; Blum R P; Rieger R; Venema L; Vollmer A; Muellen K; Rabe J P; Winkler A; Rudolf P; Zojer E; Koch N

来源：Physical Review Letters, 2010, 104(24): 246805.

DOI：10.1103/PhysRevLett.104.246805

The adsorption of the molecular acceptor hexaazatriphenylene-hexacarbonitrile on Ag(111) was investigated as function of layer density. We find that the orientation of the first molecular layer changes from a face-on to an edge-on conformation depending on layer density, facilitated through specific interactions of the peripheral molecular cyano groups with the metal. This is accompanied by a rehybridization of molecular and metal electronic states, which significantly modifies the interface and surface electronic properties, as rationalized by theoretical modeling.

• 出版日期2010-6-18