Conductance of a single molecule anchored by an isocyanide substituent to gold electrodes

被引：95

作者：

Kiguchi, Manabu ^{[1
]}

Miura, Shinichi ^{[1
]}

Hara, Kenji ^{[1
]}

Sawamura, Masaya ^{[1
]}

Murakoshi, Kei ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Sci, Div Chem, Sapporo, Hokkaido 0600810, Japan

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 21期

关键词：

Electric conductance;

D O I：

10.1063/1.2392816

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of anchoring group on the electrical conductance of a single molecule bridging two Au electrodes was studied using disubstituted [isocyanide (CN-), thiol (S-), or cyanide (NC-)] benzene. The conductance of a single Au/1,4-diisocyanobenzene/Au junction anchored by isocyanide via a C atom (junction with the Au-CN bond) was 3x10(-3)G(0)(=2e(2)/h). The value was comparable to 4x10(-3)G(0) of a single Au/1,4-benzenedithiol/Au junction with the Au-S bond. The Au/1,4-dicyanobenzene/Au molecular junction with the Au-NC bond did not show well-defined conductance values. The metal-molecule bond strength was estimated by the distance over which the molecular junction was stretched before breakdown. The stretched length of the molecular junction with the Au-CN bond was comparable to that of the Au junction, indicating that the Au-CN bond was stronger than the Au-Au bond. (c) 2006 American Institute of Physics.

引用

页数：3

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