Displacement Processes of 1-Adamanetanethiol Self-Assembled Monolayers on Au(111) by 1-Hexanethiol

被引：3

作者：

Son, Young Ji ^{[1
]}

Han, Seulki ^{[1
]}

Yoshizawa, Kaisei ^{[2
]}

Hayashi, Tomohiro ^{[2
]}

Hara, Masahiko ^{[3
]}

Noh, Jaegeun ^{[1
,4
]}

机构：

[1] Hanyang Univ, Dept Chem, Seoul 04763, South Korea

[2] Tokyo Inst Technol, Dept Mat Sci & Engn, Midori Ku, 4259 Nagatsuta, Yokohama, Kanagawa 2268502, Japan

[3] Tokyo Inst Technol, Dept Chem Sci & Engn, Midori Ku, 4259 Nagatsuta, Yokohama, Kanagawa 2268502, Japan

[4] Hanyang Univ, Inst Nano Sci & Technol, Seoul 04763, South Korea

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2019年 / 19卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

Self-Assembled Monolayers; 1-Adamantanethiol; 1-Hexanethiol; Displacement; Scanning Tunneling Microscopy; Cyclic Voltammetry; PHASE; ADSORPTION;

D O I：

10.1166/jnn.2019.16705

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Displacement processes of pre-adsorbed 1-admanetanethiol (ADT) self-assembled monolayers (SAMs) on Au(111) by 1-hexanethiol (HT) at room temperature were investigated by scanning tunneling microscopy (STM) and cyclic voltammetry (CV). Molecular-scale STM imaging clearly revealed that phase transitions from the (7 x 7) phase for ADT SAMs to the c(4 x 2) phase for HT SAMs via intermediate phase including bright aggregated islands and disordered phase. Moreover, it was found that ADT SAMs were completely displaced by HT molecules with a short hexyl chain within an hour. The CV measurements showed that cathodic peaks for SAM-modified Au(111) electrodes as a function of displacement time were varied with the structural change of displaced SAMs. Our results provide new insight into understanding the displacement processes of ADT SAMs on Au(111) by HT.

引用

页码：4732 / 4735

页数：4

共 22 条

[21] Well-Ordered Domains of 4-Fluorobenzenethiol Self-Assembled Monolayers on Au(111) Guided by a Displacement Reaction [J].