Fabrication of metal nanoparticles using toroidal plasmid DNA as a sacrificial mold

Jacopo Samson; Alessandro Varotto; Patrick C Nahirney; Alfredo Toschi; Irene Piscopo; Charles Michael Drain

doi:10.1021/nn800758n

Fabrication of metal nanoparticles using toroidal plasmid DNA as a sacrificial mold

ACS Nano. 2009 Feb 24;3(2):339-44. doi: 10.1021/nn800758n.

Authors

Jacopo Samson¹, Alessandro Varotto, Patrick C Nahirney, Alfredo Toschi, Irene Piscopo, Charles Michael Drain

Affiliation

¹ Department of Chemistry and Biochemistry, Hunter College and Graduate Center, University of New York, 695 Park Avenue, New York, New York 10065, USA.

Abstract

A new method for synthesizing gold, nickel, and cobalt metal nanoparticles at room temperature from metal salts employing plasmid DNA in a toroidal topology as a sacrificial mold is presented. The diameter of the toroidal DNA drives the formation and size of the nanoparticle, and UV light initiates the oxidation of the DNA and concomitant reduction of the DNA bound metal ions. The nanoparticles were characterized by atomic force microscopy (AFM), transmission electron microscopy (TEM), and electron diffraction (ED).

Publication types

Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

DNA / chemistry*
Metal Nanoparticles / chemistry*
Oxidation-Reduction
Particle Size
Photolysis
Plasmids / chemistry*
Temperature

Substances

DNA

Abstract

Publication types

MeSH terms

Substances

Grants and funding