A spectroscopic study of thiol layers prepared by contact printing

被引：32

作者：

Böhm, I ^{[1
]}

Lampert, A ^{[1
]}

Buck, M ^{[1
]}

Eisert, F ^{[1
]}

Grunze, M ^{[1
]}

机构：

[1] Lehrstuhl Angew Phys Chem, D-69120 Heidelberg, Germany

来源：

APPLIED SURFACE SCIENCE | 1999年 / 141卷 / 3-4期

关键词：

self-assembled monolayers; thiols; microcontact printing; sum frequency generation;

D O I：

10.1016/S0169-4332(98)00510-8

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：

Films of hexadecane thiol on gold prepared by contact printing with a stamp of polydimethylsiloxane were investigated by IR-VIS sum frequency generation (SFG), LR spectroscopy, X-ray photoelectron spectroscopy (XPS), and contact angle measurements. The contact time was up to 60 s and the pressure ranged from 1 to 6 bar. SFG, as a method directly sensitive to molecular conformation, reveals a significantly higher degree of disorder in stamped films compared to monolayers prepared by immersion. Correspondingly, contact angle measurements yield a lower advancing contact angle and a higher hysteresis. XPS analysis shows that residues of the stamping material are left on the surface. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：237 / 243

页数：7

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