In situ wiring of single molecules into an electrical circuit via electrochemical distance tunneling spectroscopy

被引：21

作者：

Wierzbinski, Emil ^{[1
]}

Slowinski, Krzysztof ^{[1
]}

机构：

[1] Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USA

来源：

LANGMUIR | 2006年 / 22卷 / 12期

关键词：

D O I：

10.1021/la060814e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electrical conductance of single n-alkanethiol and alpha,omega-alkanedithiol molecules was measured via in situ distance tunneling spectroscopy in aqueous 0.1 M KOH solution. The statistical analysis of the conductance values show that the alpha,omega-alkanedithiol molecule trapped in the STM break junction can adopt two distinct geometries that result in "lower" and "higher" conductivity values. In contrast, n-alkanethiol molecules trapped in the junction show only a single conductivity value characteristic for a particular molecule. Furthermore, the "lower" conductivity value determined for alpha,omega-alkanedithiol is virtually identical to the electrical conductivity of the n-alkanethiol containing the same number of atoms in the backbone. Moreover when the STM tip is polarized to electrochemical potential preventing a chemical reaction between the terminal -SH group and Au, only "lower" conductivity values are observed for alpha,omega-alkaneditiols.

引用

页码：5205 / 5208

页数：4

共 17 条

[1] Charge transfer on the nanoscale: Current status [J].

Adams, DM ;

Brus, L ;

Chidsey, CED ;

Creager, S ;

Creutz, C ;

Kagan, CR ;

Kamat, PV ;

Lieberman, M ;

Lindsay, S ;

Marcus, RA ;

Metzger, RM ;

Michel-Beyerle, ME ;

Miller, JR ;

Newton, MD ;

Rolison, DR ;

Sankey, O ;

Schanze, KS ;

Yardley, J ;

Zhu, XY .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (28) :6668-6697

[2] Reproducible measurement of single-molecule conductivity [J].

Cui, XD ;

Primak, A ;

Zarate, X ;

Tomfohr, J ;

Sankey, OF ;

Moore, AL ;

Moore, TA ;

Gust, D ;

Harris, G ;

Lindsay, SM .

SCIENCE, 2001, 294 (5542) :571-574

[3] Measurement of single molecule conductivity using the spontaneous formation of molecular wires [J].

Haiss, W ;

Nichols, RJ ;

van Zalinge, H ;

Higgins, SJ ;

Bethell, D ;

Schiffrin, DJ .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2004, 6 (17) :4330-4337

[4] Redox state dependence of single molecule conductivity [J].

Haiss, W ;

van Zalinge, H ;

Higgins, SJ ;

Bethell, D ;

Höbenreich, H ;

Schiffrin, DJ ;

Nichols, RJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (50) :15294-15295

[5] Study of single-nucleotide polymorphisms by means of electrical conductance measurements [J].

Hihath, J ;

Xu, BQ ;

Zhang, PM ;

Tao, NJ .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2005, 102 (47) :16979-16983

[6] Electron transport in molecular wire junctions [J].

Nitzan, A ;

Ratner, MA .

SCIENCE, 2003, 300 (5624) :1384-1389

[7] Conductance of a molecular junction [J].

Reed, MA ;

Zhou, C ;

Muller, CJ ;

Burgin, TP ;

Tour, JM .

SCIENCE, 1997, 278 (5336) :252-254

[8] In situ scanning probe spectroscopy at nanoscale solid/liquid interfaces [J].

Schindler, W ;

Hugelmann, M ;

Hugelmann, P .

ELECTROCHIMICA ACTA, 2005, 50 (15) :3077-3083

[9] Electrochemical wiring of α,ω-alkanedithiol molecules into an electrical circuit [J].

Sek, S ;

Bilewicz, R ;

Slowinski, K .

CHEMICAL COMMUNICATIONS, 2004, (04) :404-405

[10] Through-bond and chain-to-chain coupling. Two pathways in electron tunneling through liquid alkanethiol monolayers on mercury electrodes [J].

Slowinski, K ;

Chamberlain, RV ;

Miller, CJ ;

Majda, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (49) :11910-11919

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