Unbound MEDLINE

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

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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  • Authors

    Leubner S, Katsukis G, Guldi DM

    Institution

    Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Egerlandstr. 3, 91058 Erlangen, Germany.

    Source

    Faraday discussions 155: 2012 pg 253-65; discussion 297-308

    MeSH

    Cadmium
    Electrochemistry
    Electrolytes
    Electron Transport
    Green Chemistry Technology
    Nanotubes
    Photochemistry
    Photosynthesis
    Quantum Dots
    Solar Energy
    Solutions
    Spectrum Analysis
    Static Electricity
    Sunlight
    Tellurium
    Thioglycolates
    Water

    Pub Type(s)

    Journal Article
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    22470978