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Polymer Grafting from CdS Quantum Dots via AGET ATRP in Miniemulsion
Author(s) -
Esteves Ana C. C.,
Bombalski Lindsay,
Trindade Tito,
Matyjaszewski Krzysztof,
BarrosTimmons Ana
Publication year - 2007
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200600510
Subject(s) - miniemulsion , atom transfer radical polymerization , materials science , polymerization , quantum dot , photochemistry , polymer , nanocomposite , polymer chemistry , nanotechnology , chemistry , composite material
We report the synthesis of CdS quantum dot (QD)–poly(acrylate) nanocomposites using a recently developed catalytic system where activators are generated by electron transfer for atom‐transfer radical polymerization (ATRP) in a miniemulsion. The QD surface was functionalized with a tris(alkyl)phosphine, previously modified with an ATRP chlorine initiator, and subsequent controlled polymerization was carried out from the functionalized surface of nanoparticles. The final material showed a high homogeneity and the QDs were evenly dispersed. The optical‐absorption edge in the visible spectra of the nanocomposites attests the presence of the CdS QDs. Quantum confinement effects were assigned, though a blue shift in relation to the optical spectrum of the initial QDs has been observed.