DNA-mediated self-assembly of carbon nanotubes on gold

被引：7

作者：

Sanchez-Pomales, Germarie ^{[1
,2
]}

Rivera-Velez, Nelson E. ^{[1
,2
]}

Cabrera, Carlos R. ^{[1
,2
]}

机构：

[1] Univ Puerto Rico, Dept Chem, Rio Piedras Campus,POB 23346, San Juan, PR 00931 USA

[2] Univ Puerto Rico, Ctr Nanoscale Mat, San Juan, PR 00931 USA

来源：

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON NANOSCIENCE AND TECHNOLOGY | 2007年 / 61卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1088/1742-6596/61/1/201

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This report presents the use of disulfide-modified single-stranded DNA (ssDNA) to form DNA self-assembled monolayers (SAMs) and mixed DNA-carbon nanotube (CNT) hybrids SAMs on gold substrates. Mixed DNA-CNT SAMs are composed of DNA, mercaptohexanol (MCH) and DNA-CNT aggregates. Both, DNA-CNT and DNA areas of the mixed SAMs were analyzed and compared to traditional DNA SAMs. The results suggest the formation of a more compact and densely packed monolayer of DNA-CNT in comparison with DNA. The use of DNA-CNT hybrids to form SAMs on gold substrates might represent a new approach to improve the immobilization of DNA strands on gold, and might therefore help with the development of enhanced DNA sensors.

引用

页码：1017 / 1021

页数：5

共 11 条

[1] Self-assembled monolayers of small aromatic disulfide and diselenide molecules on polycrystalline gold films: A comparative study of the geometrical constraint using temperature-dependent surface-enhanced raman spectroscopy, X-ray photoelectron spectroscopy, and electrochemistry [J].