Photoluminescence quenching control in quantum dot-carbon nanotube composite colloids using a silica-shell spacer

Marek Grzelczak, Miguel A. Correa-Duarte, Veronica Salgueiriño-Maceira, Michael Giersig, Rodolfo Diaz, Luis M. Liz-Marzán

Research output: Contribution to journalArticle

104 Scopus citations

Abstract

The photoluminescence quenching control in CdSe quantum dot (QD) - carbon nantotube (CNT) composite colloids was investigated using a silica-shell spacer. These one-dimensional nanoparticles were found to minimize the spacing between nanocrystals, thus facilitating efficient electronic and energy transfer along the resulting nanotubes. The presence of a silica shell between the nanocrystals and the CNTs was found to screen the electronic coupling between nanoparticles and templates, keeping the energy levels unaffected. This electronic coupling phenomena results in minimizing the PL quenching and maintaining the quantum-confinement effects.

Original languageEnglish (US)
Pages (from-to)415-420
Number of pages6
JournalAdvanced Materials
Volume18
Issue number4
DOIs
StatePublished - Feb 17 2006

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Photoluminescence quenching control in quantum dot-carbon nanotube composite colloids using a silica-shell spacer'. Together they form a unique fingerprint.

  • Cite this

    Grzelczak, M., Correa-Duarte, M. A., Salgueiriño-Maceira, V., Giersig, M., Diaz, R., & Liz-Marzán, L. M. (2006). Photoluminescence quenching control in quantum dot-carbon nanotube composite colloids using a silica-shell spacer. Advanced Materials, 18(4), 415-420. https://doi.org/10.1002/adma.200501523