Loosely packed self-assembled monolayers on gold generated from 2-alkyl-2-methylpropane-1,3-dithiols

被引：54

作者：

Park, JS ^{[1
]}

Smith, AC ^{[1
]}

Lee, TR ^{[1
]}

机构：

[1] Univ Houston, Dept Chem, Houston, TX 77204 USA

来源：

LANGMUIR | 2004年 / 20卷 / 14期

关键词：

D O I：

10.1021/la036424z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of 2-alkyl-2-methylpropane-1,3-dithiol derivatives with increasing alkyl chain lengths (i.e., CH3(CH2)(m)C(CH3)[CH2SH](2), where m = 7, 9, 11, 13, 15) were synthesized and used to generate self-assembled monolayers (SAMs) on gold. The resulting monolayers were analyzed by ellipsometry, contact angle goniometry, polarization modulation infrared reflection-absorption spectroscopy, and X-ray photoelectron spectroscopy. These data were compared with those obtained on SAMs on gold derived from normal alkanethiols (CH3(CH2)(m+2)SH) and 2-monoalkylpropane-1,3-dithiols (CH3(CH2)(m)CH[CH2SH](2)) having the same number of carbon atoms in the primary chain. The results demonstrate that the 2-alkyl-2-methylpropane-1,3-dithiols generate conformationally disordered monolayer films in which the density of alkyl chains is less than those generated from normal alkanethiols and the 2-monoalkylpropane-1,3-dithiols.

引用

页码：5829 / 5836

页数：8

共 51 条

[41] The adsorption of unsymmetrical spiroalkanedithiols onto gold affords multi-component interfaces that are homogeneously mixed at the molecular level [J].