Investigation of intermolecular interactions in perylene films on Au(111) by infrared spectroscopy

被引：7
作者：
Ding, Li [1 ]
Schulz, Philip [1 ]
Farahzadi, Azadeh [1 ]
Shportko, Kostiantyn V. [1 ]
Wuttig, Matthias [1 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Phys IA, D-52056 Aachen, Germany
来源：
JOURNAL OF CHEMICAL PHYSICS | 2012年 / 136卷 / 05期
关键词：
ORGANIC THIN-FILMS; RAMAN-SPECTRA; 3,4,9,10-PERYLENETETRACARBOXYLIC DIANHYDRIDE; TEMPERATURE-DEPENDENCE; AROMATIC-HYDROCARBONS; GROWTH; SEMICONDUCTOR; ABSORPTION; CRYSTALS; TRANSISTORS;
D O I：
10.1063/1.3681164
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Intermolecular interactions in crystalline perylene films on Au(111) have been investigated by Fourier transform infrared spectroscopy. Dimer modes of vibrations are observed in the crystalline film, in contrast to the monomer modes found for isolated perylene molecules. These dimers are formed via hydrogen bonding in the sandwich herringbone structure of the crystalline alpha-phase. Davydov splitting of both the monomer and the dimer modes is observed due to resonance dynamic intermolecular interaction. The splitting of monomer modes into three distinct vibrations and the occurrence of the dimer modes confirm that the film crystallizes in the alpha phase, which is in line with the x-ray diffraction results. The frequency shift and band broadening at elevated temperature have been attributed to the cubic and quartic anharmonic interactions. (C) 2012 American Institute of Physics. [doi:10.1063/1.3681164]
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页数：8
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