UHV-STM studies on the structures of alkanedithiol self-assembled monolayers

被引：24

作者：

Kobayashi, K ^{[1
]}

Yamada, H ^{[1
]}

Horiuchi, T ^{[1
]}

Matsushige, K ^{[1
]}

机构：

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

来源：

APPLIED SURFACE SCIENCE | 1999年 / 144-45卷

关键词：

self-assembly; monolayers; scanning tunneling microscopy;

D O I：

10.1016/S0169-4332(98)00837-X

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：

The structure of alkanedithiol SAMs was investigated using an ultrahigh vacuum scanning tunneling microscope (UHV-STM). The study revealed that the monolayer film consists of fully packed striped domains with the spacing of the bright stripe lines corresponding to the length of the molecule. We also found series of separated bright dots that were attributed to sulfur atoms, indicating that the molecules are arranged with their axes almost parallel to the surface. Furthermore, we obtained STM images of the mixture SAMs formed by coadsorbed alkanethiol and alkanedithiol molecules showing a phase separated structure. The images clearly show a structural difference between the regions of alkanethiol SAMs and alkanedithiol SAMs. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：435 / 438

页数：4

共 6 条

[1] ''Coulomb staircase'' at room temperature in a self-assembled molecular nanostructure [J].

Andres, RP ;

Bein, T ;

Dorogi, M ;

Feng, S ;

Henderson, JI ;

Kubiak, CP ;

Mahoney, W ;

Osifchin, RG ;

Reifenberger, R .

SCIENCE, 1996, 272 (5266) :1323-1325

[2] A single-electron transistor made from a cadmium selenide nanocrystal [J].

Klein, DL ;

Roth, R ;

Lim, AKL ;

Alivisatos, AP ;

McEuen, PL .

NATURE, 1997, 389 (6652) :699-701

[3] Structural study on self-assembled monolayers of alkanedithiol molecules [J].

Kobayashi, K ;

Umemura, J ;

Horiuchi, T ;

Yamada, H ;

Matsushige, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1998, 37 (3A) :L297-L299

[4] The self-assembly mechanism of alkanethiols on Au(111) [J].

Poirier, GE ;

Pylant, ED .

SCIENCE, 1996, 272 (5265) :1145-1148

[5] Single electron transistor using a molecularly linked gold colloidal particle chain [J].

Sato, T ;

Ahmed, H ;

Brown, D ;

Johnson, BFG .

JOURNAL OF APPLIED PHYSICS, 1997, 82 (02) :696-701

[6]

Ulman A., 1991, INTRO ULTRATHIN ORGA

← 1 →