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

doi:10.1002/adma.200501523

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 journal › Article › peer-review

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 language	English (US)
Pages (from-to)	415-420
Number of pages	6
Journal	Advanced Materials
Volume	18
Issue number	4
DOIs	https://doi.org/10.1002/adma.200501523
State	Published - Feb 17 2006

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1002/adma.200501523

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

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.",

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AU - Grzelczak, Marek

AU - Correa-Duarte, Miguel A.

AU - Salgueiriño-Maceira, Veronica

AU - Giersig, Michael

AU - Diaz, Rodolfo

AU - Liz-Marzán, Luis M.

PY - 2006/2/17

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N2 - 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.

AB - 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.

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ER -

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

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