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  • Title: Decorating polyelectrolyte wrapped SWNTs with CdTe quantum dots for solar energy conversion.
    Author: Leubner S, Katsukis G, Guldi DM.
    Journal: Faraday Discuss; 2012; 155():253-65; discussion 297-308. PubMed ID: 22470978.
    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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