Tuning of Supramolecular Self-assembly in Thin Multilayer Films of Polyaromatic Hydrocarbons and Porphyrins
Ordered films of polycyclic aromatic hydrocarbons (PAHs), porphyrins and phthalocyanines with functional (e.g. Thiophene) side-groups can be exploited in (opto-)electronic applications where fast charge separation and transport is required. Such disk-like molecules posess an excellent ability to stack in columnar nanostructures where extended -electronic states may be formed. Highly-ordered, thin films of such discotic molecules, including hexa-per/-hexabenzocoronene (HBC)1. Tetrakis(5-bromo-2-thienyl)-zincporphyrin2 and copper phthalocyanines3 molecules have been grown by vapor deposition or from solutions on atomically-flat, semi-metallic molybdenum disulfide, MoS2 0001, or highly-oriented pyrolytic graphite, HOPG 0001, substrates and characterized by scanning force microscopies, X-ray (XPS) and angle-resolved ultraviolet (ARUPS) photoelectron spectroscopy. A vertical growth of self-assembled, supramolecular columns and their lateral ordering on the surface has been achieved.
organic electronics molecular self-assembly electronic structure photoelectron spectroscopy
Rainer Friedlein
School of Materials Science and Research Center for Integrated Science,Japan Advanced Institute of Science and Technology (JAIST),1-1,Asahidai,Nomi,Ishikawa 923-1292,Japan
国际会议
江苏镇江
英文
206-207
2008-10-15（万方平台首次上网日期，不代表论文的发表时间）