Tris(hydroxymethyl)phosphine-capped gold particles templated by DNA as nanowire precursors

被引：172

作者：

Harnack, O ^{[1
]}

Ford, WE ^{[1
]}

Yasuda, A ^{[1
]}

Wessels, JM ^{[1
]}

机构：

[1] Sony Int Europe GmbH, Adv Technol Ctr Stuttgart, Mat Sci Labs, D-70327 Stuttgart, Germany

来源：

NANO LETTERS | 2002年 / 2卷 / 09期

关键词：

D O I：

10.1021/nl020259a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Tris(hydroxymethyl)phosphine-capped gold nanoparticles (ca. 1-2 nm diameter) bind densely to DNA, although both species are negatively charged. The particles are also active catalysts for electroless plating of gold. Electroless plating after adsorption to calf thymus DNA immobilized on silicon provides nanowires as narrow as ca. 30-40 nm and electrical conductivities ca. one-thousandth that of bulk gold. Here we summarize our physical characterization of the particles and their DNA conjugates and initial electrical measurements after plating.

引用

页码：919 / 923

页数：5

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