Cobalt metallization of DNA: toward magnetic nanowires

被引：82

作者：

Gu, Q ^{[1
]}

Cheng, CD ^{[1
]}

Haynie, DT ^{[1
]}

机构：

[1] Louisiana Tech Univ, Ctr Appl Phys Studies, Ruston, LA 71272 USA

来源：

NANOTECHNOLOGY | 2005年 / 16卷 / 08期

关键词：

D O I：

10.1088/0957-4484/16/8/063

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Co nanoparticles have been assembled in situ on a template of double-stranded deoxyribonucleic acid (DNA) to form magnetic nanowires. DNA was immobilized on freshly cleaved mica or silanized glass and oriented by molecular combing. Pd(II) ions bound to DNA were reduced to zero-valence nanoclusters, which selectively catalysed deposition of Co(O) in a dimethylamine borane (DMAB)-based reducing bath. Co nanoclusters grew only where Pd nuclei were localized on the DNA template. Material characterization by UV-vis spectroscopy (UVS), atomic force microscopy (AFM), and energy dispersive x-ray (EDX) spectroscopy revealed that the fabrication process resulted in the formation of Co nanowires microns long and 10-20 nm thick.

引用

页码：1358 / 1363

页数：6

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