SAMs on Gold Derived from the Direct Adsorption of Alkanethioacetates Are Inferior to Those Derived from the Direct Adsorption of Alkanethiols

被引：72

作者：

Bethencourt, Mathilde I. ^{[1
]}

Srisombat, La-ongnuan ^{[1
]}

Chinwangso, Pawilai ^{[1
]}

Lee, T. Randall ^{[1
]}

机构：

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

来源：

LANGMUIR | 2009年 / 25卷 / 03期

关键词：

SELF-ASSEMBLED MONOLAYERS; RAY PHOTOELECTRON-SPECTROSCOPY; NORMAL-ALKYL CHAINS; H STRETCHING MODES; ORGANIC-SURFACES; STRUCTURAL-CHARACTERIZATION; INFRARED-SPECTROSCOPY; FILMS; DISULFIDES; WETTABILITIES;

D O I：

10.1021/la803179q

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Self-assembled monolayers (SAMs) on gold derived from the direct adsorption of thioacetic acid S-decyl ester (C10SAc) and thioacetic acid S-octadecyl ester (C18SAc) were compared to the corresponding SAMs derived from the analogous adsorption n-decanethiol (C10SH) and n-octadecanethiol (C18SH). All SAMs were characterized using ellipsometry, contact angle goniometry, polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS), and X-ray photoelectron spectroscopy (XPS). The comparison revealed that the SAMs generated from the thioacetates are not as densely packed and well ordered as the SAMs generated from the thiols. Furthermore, studies of the kinetics of adsorption found that the thioacetates adsorb more slowly than the corresponding thiols.

引用

页码：1265 / 1271

页数：7

共 68 条

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