Determination of DNA-base orientation on carbon nanotubes through directional optical absorbance.
Determination of DNA-base orientation on carbon nanotubes through directional optical absorbance.
复制标题
DOI：
10.1021/nl070953w
复制
发表时间：
2007-07
期刊：
影响因子：
10.8
通讯作者：
Sheng Meng;W. Wang;P. Maragakis;E. Kaxiras
中科院分区：
文献类型：
--
作者：
Sheng Meng;W. Wang;P. Maragakis;E. Kaxiras
我们开发了一种方法来确定附着在碳纳米管（CNTs）的DNA碱基的取向，结合从头算含时密度泛函理论和光谱测量。我们发现的结构是在良好的协议与（10，0）碳纳米管上的核苷的几何形状从分子模拟使用经验力场。结果揭示了DNA-CNT系统的复杂相互作用，这是通过电子探针进行超快DNA测序的候选者。
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.