Structural study on self-assembled monolayers of alkanedithiol molecules

被引：25

作者：

Kobayashi, K ^{[1
]}

Umemura, J

Horiuchi, T

Yamada, H

Matsushige, K

机构：

[1] Kyoto Univ, Dept Elect Sci & Engn, Kyoto 6068501, Japan

[2] Kyoto Univ, Chem Res Inst, Uji, Kyoto 6110011, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1998年 / 37卷 / 3A期

关键词：

self-assembled monolayers; alkanethiol; alkanedithiol; scanning tunneling microscopy; Fourier transform infrared reflection-absorption spectroscopy;

D O I：

10.1143/JJAP.37.L297

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Structures of self-assembled monolayers (SAMs) of alkanedithiol molecules were studied using an ultrahigh vacuum scanning tunneling microscope (UHV-STM) acid by Fourier transform infrared reflection-absorption spectroscopy (FT-IR-RAS). Clearly resolved STM images of alkanedithiol SAMs revealed striped structures as bright lines and the distance between the adjacent bright lines was about 1.5 nm, which is in good agreement with the length of the alkanedithiol molecule. Furthermore, the intensities of the CH2 stretching bands in FT-IR-RAS measurement of alkanedithiol SAMs were stronger than those of alkanethiol SAMs, We suggest that the molecules in alkanedithiol SAMs are arranged with their axes parallel to the gold substrate.

引用

页码：L297 / L299

页数：3

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