title: 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.affiliation: Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Egerlandstr. 3, 91058 Erlangen, Germany.
authors.forename: Susanne
authors.initials: S
authors.lastname: Leubner
authors.forename: Georgios
authors.initials: G
authors.lastname: Katsukis
authors.forename: Dirk M
authors.initials: DM
authors.lastname: Guldi
mesh_terms: D002104:Cadmium / Q000737:chemistry; D004563:Electrochemistry; D004573:Electrolytes / Q000737:chemistry; D004579:Electron Transport; D055772:Green Chemistry Technology / Q000379:methods*; D043942:Nanotubes; D010777:Photochemistry / Q000379:methods*; D010788:Photosynthesis; D045663:Quantum Dots; D012993:Solar Energy / Q000706:statistics & numerical data*; D012996:Solutions; D013057:Spectrum Analysis; D055672:Static Electricity; D013472:Sunlight; D013691:Tellurium / Q000737:chemistry; D013864:Thioglycolates; D014867:Water / Q000737:chemistry / Q000378:metabolism
chemical_list: D004573:Electrolytes; D012996:Solutions; D013864:Thioglycolates; D002104:Cadmium; D014867:Water; C017487:2-mercaptoacetate; D013691:Tellurium