Electronic properties of guanine-based nanowires

被引：12

作者：

Calzolari, A ^{[1
]}

Di Felice, R

Molinari, E

机构：

[1] Univ Modena, INFMS, Natl Res Ctr NanoStruct & BioSyst Surfaces, I-41100 Modena, Italy

[2] Univ Modena, Dipartimento Fis, I-41100 Modena, Italy

来源：

SOLID STATE COMMUNICATIONS | 2004年 / 131卷 / 9-10期

关键词：

nanostructures; electronic band structure; electronic transport;

D O I：

10.1016/j.ssc.2004.05.032

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present a first-principles study of the electronic and conduction properties of a few classes of nanowires composed of guanine (G) molecules, self-assembled in different geometries. We first analyze the effect of the vertical pi-pi interaction in model G-stack columns. Then, we exploit the results obtained from those models to interpret the features of realistically stacked and hydrogen-bonded aggregates, namely the guanine quadruple helices and the planar ribbons. With respect to natural DNA, the different structures drastically affect the bonding pattern among the bases, introducing novel features in the electronic properties of the systems. These supramolecular G-aggregates, alternative to DNA, are expected to show interesting properties for molecular electronics applications. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：557 / 564

页数：8

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