Plasmon resonance tunable by deaggregation of gold nanoparticles in multilayers

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Conghua Lu - , Max Planck Institute of Colloids and Interfaces (Author)
  • Helmuth Möhwald - , Max Planck Institute of Colloids and Interfaces (Author)
  • Andreas Fery - , Max Planck Institute of Colloids and Interfaces, University of Bayreuth (Author)

Abstract

In this paper we report polyelectrolyte multilayer films containing gold nanoparticles (AuNPs) whose spectroscopic properties can be controlled by post-treatment. When building multilayers from hydrogen-bonded polyethylene oxide) and polyacrylic acid-decorated AuNPs, a commonly observed red-shift of the nanoparticles' plasmon resonance occurs. For this system, however, this effect can be reversed to a large degree with the film growth and further by post-treatments such as annealing. The effects of water evaporation and film structure changes such as the interdigitation of assembled layers and the induced deaggregation of AuNPs with a uniform distribution in the assembly films have been well investigated.

Details

Original languageEnglish
Pages (from-to)10082-10087
Number of pages6
JournalJournal of Physical Chemistry C, Nanomaterials and interfaces
Volume111
Issue number27
Publication statusPublished - 12 Jul 2007
Peer-reviewedYes
Externally publishedYes