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Nanoscale Patterns of Metal Nanoparticles Chemically-Assembled on Biomolecular Scaffolds: Assembly, Stability and Electron Transport Properties

Published online by Cambridge University Press:  21 March 2011

James E. Hutchison ,
Leif O. Brown ,
Jana L. Mooster ,
Scott M. Reed ,
Mary E. Schmidt ,
Laura I. Clarke  and
Martin N. Wybourne
James E. Hutchison
Affiliation:
Department of Chemistry, University of Oregon, Eugene, OR 97403-1253
Leif O. Brown
Affiliation:
Department of Chemistry, University of Oregon, Eugene, OR 97403-1253
Jana L. Mooster
Affiliation:
Department of Chemistry, University of Oregon, Eugene, OR 97403-1253
Scott M. Reed
Affiliation:
Department of Chemistry, University of Oregon, Eugene, OR 97403-1253
Mary E. Schmidt
Affiliation:
Department of Chemistry, University of Oregon, Eugene, OR 97403-1253
Laura I. Clarke
Affiliation:
Department of Physics and Astronomy, Dartmouth College, Hanover, NH 03755.
Martin N. Wybourne
Affiliation:
Department of Physics and Astronomy, Dartmouth College, Hanover, NH 03755.
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Abstract

A wet chemical approach to preparing one- and two-dimensional arrays of gold nanoparticles assembled onto a polypeptide (poly-L-lysine) scaffold layer is reported. The electrical properties of biopolymer templated and nontemplated gold nanoparticle samples are compared. The electrical response of nontemplated samples is unstable, likely due to nanoparticle mobility. Biopolymer templating provides a simple, chemical method to immobilize the particles and is found to stabilize the electrical response (Coulomb blockade) of the array. A striking feature of the electrical properties is that the electron transport properties are dominated by transport through one-dimensional chains within the sample. Structural studies by AFM and XPS support the transport findings and provide evidence for the formation of one-dimensional assemblies within the arrays.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 582: Symposium H – Molecular Electronics , 1999 , H11.1
Copyright
Copyright © Materials Research Society 1999

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References

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