Potential-induced structure transitions in self-assembled monolayers: II. Propanethiol on Au(100)

被引：18
|
作者：
Schweizer, M. [1 ]
Manolova, M. [1 ]
Kolb, D. M. [1 ]
机构：
[1] Univ Ulm, Inst Electrochem, D-89069 Ulm, Germany
来源：
SURFACE SCIENCE | 2008年 / 602卷 / 21期
关键词：
Au(100); Electrochemistry; STM; Alkanethiol; Self assembly; Solid-liquid interface; Surface structure;
D O I：
10.1016/j.susc.2008.09.009
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：
The structure of propanethiol self-assembled monolayers (SAMs) on Au(100) in 0.1 M H2SO4 has been investigated as a function of electrode potential by in situ scanning tunnelling microscopy (STM). These studies reveal a potential-induced, reversible transition between an in essence quadratic and a distorted hexagonal structure. We suggest that a thiolate-driven surface reconstruction, similar to Au(100)-(hex), is responsible for the hexagonal SAM structure, whereas the quadratic one refers to the unreconstructed substrate. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：3303 / 3307
页数：5
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