Polyaminoacid-Induced Growth of Metal Nanoparticles on Layer-by-Layer Templates

Abstract

We report on preparation of redox-active nanoscale layer-by-layer (LbL) films with polyaminoacid-decorated surfaces that serve for both nucleation and growth of uniformly distributed gold nanoparticles at ambient conditions. We found that a poly-L-tyrosine (pTyr), a synthetic polyaminoacid, was able to direct nanoparticle formation to solid, flexible, and patterned surfaces preventing particle agglomeration. The gold particles were 8 +/- 2 nm in diameter, surrounded by 3-6 nm polyaminoacid shell, and confined to the topmost polyaminoacid layer. The reported results on bioinspired gold formation can be readily expanded to any inorganic-selective surface and provide a simple, robust, and nontoxic method to obtain nonaggregated inorganic nanoparticles at ambient conditions.

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Document Details

Document Type
Technical Report
Publication Date
Aug 21, 2008
Accession Number
ADA591482

Entities

People

  • Eugenia Kharlampieva
  • Joseph M. Slocik
  • Rajesh R Naik
  • Taisia Tsukruk
  • Vladimir V. Tsukruk

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Aqueous Solutions
  • Chemical Synthesis
  • Chemistry
  • Films
  • Materials
  • Materials Laboratories
  • Materials Science
  • Metallic Nanoparticles
  • Metals
  • Military Research
  • Nanomaterials
  • Nanoparticles
  • Nanostructures
  • Particles
  • Polymers
  • Template Patterns

Readers

  • Nanocomposite Materials Science
  • Thin Film Deposition Science.

Technology Areas

  • Biotechnology