Determination of DNA-base orientation on carbon nanotubes through directional optical absorbance

被引：55

作者：

Meng, Sheng

Wang, Wei L.

Maragakis, Paul

Kaxiras, Efthimios ^{[1
]}

机构：

[1] Harvard Univ, Sch Engn & Appl Sci, Dept Phys, Cambridge, MA 02138 USA

[2] DE Shaw Res, New York, NY 10036 USA

来源：

NANO LETTERS | 2007年 / 7卷 / 08期

关键词：

D O I：

10.1021/nl070953w

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We develop an approach for determining the orientation of DNA bases attached to carbon nanotubes (CNTs), by combining ab initio time-dependent density functional theory and optical spectroscopy measurements. The structures we find are in good agreement with the geometry of nucleosides on a (10,0) CNT obtained from molecular simulations using empirical force fields. The results shed light into the complex interactions of the DNA-CNT system, a candidate for ultrafast DNA sequencing through electronic probes.

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页码：2312 / 2316

页数：5

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