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.

Authors

Leubner S, Katsukis G, Guldi DM

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