STM studies on nanoscopic structures and electric characteristics of alkanethiol and alkanedithiol self-assembled monolayers

被引:46
作者
Kobayashi, K [1 ]
Horiuchi, T [1 ]
Yamada, H [1 ]
Matsushige, K [1 ]
机构
[1] Kyoto Univ, Dept Elect Sci & Engn, Kyoto 6068501, Japan
关键词
alkanes; monolayers; gold; scanning tunneling microscopy; electrical properties and measurement;
D O I
10.1016/S0040-6090(98)00921-3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The structures and electric characteristics of alkanethiol and alkanedithiol self-assembled monoloyers: (SAMs) were studied using ultrahigh vacuum scanning tunneling microscopy (UHV-STM). We show molecularly resolved STM images of alkanethiol SAMs. The current voltage characteristics (I-V curves) of alkanethiol SAMs were also measured to investigate the electrical properties. The obtained asymmetric I-V curves were discussed in connection with the structures of alkanethiol SAMs as the electric dipole sheet. We also studied the structures of alkanedithiol SAMs with STM and found a new structure consisting of stripes. We suggest that the molecules are lying with their axes parallel to the surface. The obtained symmetric I-V curves were well explained in terms of the structures of alkanedithiol SAMs. Moreover, the STM image of the mixture SAMs of alkanethiol and alkanedithiol molecules showing the phase separated structure was obtained. (C) 1998 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:210 / 215
页数:6
相关论文
共 15 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]   SINGLE-ELECTRON TUNNELING AT ROOM-TEMPERATURE WITH ADJUSTABLE DOUBLE-BARRIER JUNCTIONS [J].
ANSELMETTI, D ;
RICHMOND, T ;
BARATOFF, A ;
BORER, G ;
DREIER, M ;
BERNASCONI, M ;
GUNTHERODT, HJ .
EUROPHYSICS LETTERS, 1994, 25 (04) :297-302
[3]   DOMAIN AND MOLECULAR SUPERLATTICE STRUCTURE OF DODECANETHIOL SELF-ASSEMBLED ON AU(111) [J].
ANSELMETTI, D ;
BARATOFF, A ;
GUNTHERODT, HJ ;
DELAMARCHE, E ;
MICHEL, B ;
GERBER, C ;
KANG, H ;
WOLF, H ;
RINGSDORF, H .
EUROPHYSICS LETTERS, 1994, 27 (05) :365-370
[4]   SUPERLATTICE STRUCTURE AT THE SURFACE OF A MONOLAYER OF OCTADECANETHIOL SELF-ASSEMBLED ON AU(111) [J].
CAMILLONE, N ;
CHIDSEY, CED ;
LIU, GY ;
SCOLES, G .
JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (04) :3503-3511
[5]   ELECTRONIC AND MECHANICAL CHARACTERIZATION OF SELF-ASSEMBLED ALKANETHIOL MONOLAYERS BY SCANNING-TUNNELING-MICROSCOPY COMBINED WITH INTERACTION-FORCE-GRADIENT SENSING [J].
DURIG, U ;
ZUGER, O ;
MICHEL, B ;
HAUSSLING, L ;
RINGSDORF, H .
PHYSICAL REVIEW B, 1993, 48 (03) :1711-1717
[6]   SURFACE-POTENTIAL STUDIES OF ALKYL-THIOL MONOLAYERS ADSORBED ON GOLD [J].
EVANS, SD ;
ULMAN, A .
CHEMICAL PHYSICS LETTERS, 1990, 170 (5-6) :462-466
[7]   CHAIN-LENGTH DEPENDENCE OF THE STRUCTURES AND PHASES OF CH3(CH2)N-1SH SELF-ASSEMBLED ON AU(111) [J].
FENTER, P ;
EISENBERGER, P ;
LIANG, KS .
PHYSICAL REVIEW LETTERS, 1993, 70 (16) :2447-2450
[8]   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
[9]   Scanning tunneling microscopy observations of alpha,omega-bis(mercaptomethylthienyl)alkane derivatives self-assembled on Au(111) [J].
Nakamura, T ;
Kondoh, H ;
Matsumoto, M ;
Nozoye, H .
LANGMUIR, 1996, 12 (25) :5977-5979
[10]   FUNDAMENTAL-STUDIES OF MICROSCOPIC WETTING ON ORGANIC-SURFACES .1. FORMATION AND STRUCTURAL CHARACTERIZATION OF A SELF-CONSISTENT SERIES OF POLYFUNCTIONAL ORGANIC MONOLAYERS [J].
NUZZO, RG ;
DUBOIS, LH ;
ALLARA, DL .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (02) :558-569