Comparison of the Conductance of Three Types of Porphyrin-Based Molecular Wires: β,meso,β-Fused Tapes, meso-Butadiyne-Linked and Twisted meso-meso Linked Oligomers

被引：97

作者：

Sedghi, Gita ^{[2
]}

Esdaile, Louisa J. ^{[1
]}

Anderson, Harry L. ^{[1
]}

Martin, Santiago ^{[3
,4
]}

Bethell, Donald ^{[2
]}

Higgins, Simon J. ^{[2
]}

Nichols, Richard J. ^{[2
]}

机构：

[1] Univ Oxford, Dept Chem, Chem Res Lab, Oxford OX1 3TA, England

[2] Univ Liverpool, Dept Chem, Liverpool L69 7ZD, Merseyside, England

[3] Univ Zaragoza, Dept Quim Fis, E-50009 Zaragoza, Spain

[4] Univ Zaragoza, INA, E-50009 Zaragoza, Spain

来源：

ADVANCED MATERIALS | 2012年 / 24卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

single molecules; conductance; porphyrin; oligomers; conjugated; ELECTRICAL-CONDUCTION; ELECTRONIC JUNCTIONS; CHARGE SEPARATION; TRANSPORT; TRANSITION; DEPENDENCE; LENGTH; LONG; ARRAYS; CONFORMATION;

D O I：

10.1002/adma.201103109

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The length dependence of charge transport is evaluated in three families of porphyrin-based wires. Planar edge-fused tapes and alkyne-linked oligomers mediate efficient charge transport with exceptionally shallow distance dependence, whereas the conductances of the twisted singly linked chains decrease steeply with increasing oligomer length. The planar tapes are more conjugated than the alkyne-linked oligomers, but these two types of wires have similar conductance attenuation factors.

引用

页码：653 / +

页数：6

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