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Volume 155, 2012
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Decorating polyelectrolyte wrapped SWNTs with CdTe quantum dots for solar energy conversion

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Abstract

We report herein on the development of a synthetic route towards SWNT/polyelectrolyte/QD nanohybrids. On one hand, negatively charged thioglycolic acid capped CdTe QDs were prepared via an aqueous solution based synthesis. On the other hand, SWNTs were coated with a positively charged polyelectrolyte. By virtue of electrostatic interactions between QDs and SWNTs, SWNT/polyelectrolyte/QD nanohybrids were realized, whose formation was corroborated by thorough spectroscopic and microscopic investigations. Of particular relevance are changes of the QD related emission – quantum yields and lifetimes – upon their integration into the nanohybrids. The latter is indicative for electronic communication between both the photo- and redoxactive constituents, namely QDs and SWNTs, whose nature is electron transfer.

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Article information


Submitted
13 Jun 2011
Accepted
01 Jul 2011
First published
11 Oct 2011

Faraday Discuss., 2012,155, 253-265
Article type
Paper

Decorating polyelectrolyte wrapped SWNTs with CdTe quantum dots for solar energy conversion

S. Leubner, G. Katsukis and D. M. Guldi, Faraday Discuss., 2012, 155, 253
DOI: 10.1039/C1FD00102G

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