Mapping molecular orientation of pentacene on patterned Au surface

被引:6
作者
Hsu, YJ
Hu, WS
Wei, DH
Wu, YS
Yao, YT [1 ]
机构
[1] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan
[2] Natl Tsing Hua Univ, Dept Chem, Hsinchu, Taiwan
[3] Acad Sinica, Inst Chem, Taipei 115, Taiwan
关键词
pentacene; PEEM; SAMs; micro-NEXAFS;
D O I
10.1016/j.elspec.2005.01.244
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
With a photoemission electron microscope, we investigated the orientation of pentacene films deposited on Art surface that has been patterned with self-assembled monolayers (SAMs). Organic thiols X(CH2)(n)SH - with X = -COOH or -CH3 and an aromatic thiol; served as alignment layers to control the orientation of pentacene molecules thermally deposited on top of the SAM. According to the PEEM images and near-edge X-ray absorption fine structure spectra, a SAM exposing a non-polar methyl group, a terphenyl group or a polar carboxyl group all induced perpendicular alignment of the pentacene moiety, in contrast with parallel alignment on a bare gold surface. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:401 / 404
页数:4
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