Electronic properties and structure of assemblies of CdSe nanocrystal quantum dots and Ru-polypyridine complexes probed by steady state and time-resolved photoluminescence

Alexey Y. Koposov, Paul Szymanski, Thomas Cardolaccia, Thomas J. Meyer, Victor I. Klimov, Milan Sykora

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Chemical and electronic interactions between CdSe nanocrystal quantum dots (NQDs) and Ru-polypyridine complexes are studied in solution. It is shown that photoluminescence (PL) can be used to effectively monitor the formation of NQD-complex assemblies in real time. It is also shown that with the aid of Langmuir isotherm modeling, the PL studies can be used to quantitatively characterize the composition of the assemblies and the strength of electronic interactions between their components. The approach demonstrated here is general and can be applied to other systems that combine semiconductor NQDs and appropriately functionalized organometallic or organic molecules interacting with NQDs via energy transfer, charge transfer, or other mechanisms leading to quenching of NQD emission.

Original languageEnglish
Pages (from-to)3159-3168
Number of pages10
JournalAdvanced Functional Materials
Volume21
Issue number16
DOIs
Publication statusPublished - Aug 23 2011

Keywords

  • CdSe
  • Langmuir isotherm
  • charge transfer
  • energy transfer
  • nanocrystal
  • photoluminescence
  • quantum dot
  • ruthenium polypyridine complex
  • surface chemistry

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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