摘要
The molecular orientation of perylene-3,4,9,10-tetracarboxylic acid dianhydride (PTCDA) multilayers adsorbed on Au (111) surface has been investigated using angular dependent O K-edge near edge X-ray absorption fine structure (NEXAFS) spectroscopy. The significant angular dependence of important resonant structures (π* and σ*) reveals that PTCDA molecules adopt an ordered geometry on the substrate surface. The average tilt angle of the PTCDA molecular planes is 27°±10° from the Au (111) surface.
The molecular orientation of perylene-3,4,9,10-tetracarboxylic acid dianhydride （PTCDA） multilayers adsorbed on Au （111） surface has been investigated using angular dependent O K-edge near edge X-ray absorption fine structure （NEXAFS） spectroscopy. The significant angular dependence of important resonant structures （π＊ and σ＊） reveals that PTCDA molecules adopt an ordered geometry on the substrate surface. The average tilt angle of the PTCDA molecular planes is 27°±10° from the Au （111） surface.
基金
supported by the National Natural Science Foundation of China (10975138, 10505019 and 10775126)
the Scientific Research Foundation of the Graduate School of the University of Science and Technology of China
