Angular dependent NEXAFS study of the molecular orientation of PTCDA multilayers on Au (111) surface  

作　　者：CAO Liang ZHANG WenHua HAN YuYan CHEN TieXin ZHENG ZhiYuan WAN Li XU FaQiang IBRAHIM Kurash QIAN HaiJie WANG JiaOu 

机构地区：[1]National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China [2]Beijing Synchrotron Radiation Laboratory, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China

出　　处：《Chinese Science Bulletin》2011年第33期3575-3577,共3页

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

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.

关 键 词：PTCDA NEXAFS 分子取向 表面 AU 近边X射线吸收精细结构 取向角 多层膜 

分 类 号：O484.5[理学—固体物理]