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Electronic properties of guanine-based nanowires

机译:鸟嘌呤基纳米线的电子性质

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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.
机译:我们提出了关于鸟嘌呤(G)分子组成的几类纳米线的电子和导电特性的第一性原理研究,这些分子自组装成不同的几何形状。我们首先分析模型G堆栈列中垂直pi-pi相互作用的影响。然后,我们利用从这些模型中获得的结果来解释实际堆叠和氢键结合的聚集体的特征,即鸟嘌呤四倍螺旋和平面带。对于天然DNA,不同的结构会极大地影响碱基之间的键合模式,从而在系统的电子特性中引入了新颖的特征。这些超分子G聚集体可替代DNA,有望在分子电子学应用中显示出令人感兴趣的特性。 (C)2004 Elsevier Ltd.保留所有权利。

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