Angular-resolved XANES measurements of the polar and azimuthal orientation of alkanethiols on InP(110)

被引：11

作者：

Zerulla, D ^{[1
]}

Mayer, D ^{[1
]}

Hallmeier, KH ^{[1
]}

Chassé, T ^{[1
]}

机构：

[1] Univ Leipzig, Wilhelm Ostwald Inst Phys & Theoret Chem, D-04103 Leipzig, Germany

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 311卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(99)00827-1

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：

This Letter describes investigations of the X-ray absorption near-edge structure of adsorbed hexndecanethiol monolayers on InP(110). The angular (azimuthal and polar)-resolved measurements reveal the substrate-dependent tilt-angle of the alkyl C-C backbone (about 34 degrees from normal). A unique feature observed on these monolayers is the nearly complete alignment of the alkyl chains with respect to the azimuthal orientation. We suggest that this adsorbate system represents the case of a single-domain organic monolayer. We interpret this behaviour, which deviates strongly from the web-known thiol films on gold silver or copper, in terms of structural constraints and dangling-bond-induced pre-orientation of the alkanethiol chains. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：8 / 12

页数：5

共 18 条

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