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Design of a Water‐Soluble Hybrid Nanocomposite of CdTe Quantum Dots and an Iridium Complex for Photoinduced Charge Transfer
Author(s) -
Wang Yu,
Li Steve,
Kershaw Stephen V.,
Hetsch Frederik,
Tam Anthony Y. Y.,
Shan Guangcun,
Susha Andrei S.,
Ko ChiChiu,
WingWah Yam Vivian,
Lo Kenneth K. W.,
Rogach Andrey L.
Publication year - 2012
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201101005
Subject(s) - quantum dot , iridium , cadmium telluride photovoltaics , aqueous solution , relaxation (psychology) , nanocomposite , photochemistry , materials science , photoinduced electron transfer , polymer , chemical physics , conjugated system , chemistry , electron transfer , nanotechnology , organic chemistry , catalysis , psychology , social psychology , composite material
We report the use of an organo‐iridium dye conjugated with a water‐soluble copolyethylenimine polymer, allowing the hybrid material to be used in combination with thioacid‐coated CdTe quantum dots in an aqueous medium. When they are combined, hot carrier cooling observed in the pure quantum‐dot case is heavily suppressed indicating fast (ps) electron transfer on a timescale that competes with non‐radiative (Auger) relaxation.