Modulating the Reactivity of Electrode Surfaces by Electrostatic Assembly of Metal Nanoparticles and Quantum Dots

Christopher R. Bradbury, Christa Buenzli, Jianjun Zhao, Michel Carrara, Gabriela R. Kissling, Evren Asian-Guerel, David J. Fermin*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

7 Citations (Scopus)

Abstract

Charge transport phenomena in opto-electronic devices featuring functional polymers and nanostructured materials critically depend on the electronic communication between the building blocks and the metal contacts. The generation of ordered multilayer structures at electrode surfaces is often a key requirement to avoid electrically isolated (inactive) areas in the devices. This issue is particularly crucial in hybrid photovoltaic, light emitting and electrochromic systems. In the present contribution, the properties of electrode surfaces modified by electrostatic layer-by-layer methods are highlighted as a versatile approach for generating two- and three-dimensional assemblies of nanostructures. The connectivity between the nanoparticles and the electrode surface is probed by a variety of techniques including Kelvin probe, electrostatic force microscopy and electrochemical methods. The main characteristics of electrode surfaces modified by electrostatic self-assembly are illustrated with several examples involving metal nanostructures and CdTe quantum dots.

Original languageEnglish
Pages (from-to)841-846
Number of pages6
JournalChimia
Volume62
Issue number10
DOIs
Publication statusPublished - 2008

Keywords

  • EFM
  • Electrochemistry
  • Electrode surfaces
  • Electrostatic layer-by-layer assembly
  • Kelvin probe
  • Metal nanoparticles
  • Polyelectrolyte
  • Quantum dots
  • CHARGE-TRANSFER
  • FILMS
  • NANOCRYSTALS
  • MONOLAYERS
  • RESOLUTION

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