Polymer grafting from CdS quantum dots via AGET ATRP in miniemulsion.
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.
Esteves
Ana C C
AC
CICECO, Departamento de Química, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
Bombalski
Lindsay
L
Trindade
Tito
T
Matyjaszewski
Krzysztof
K
Barros-Timmons
Ana
A
D000179:Acrylates / Q000138:chemical synthesis; D019187:Cadmium Compounds; D004655:Emulsions; D053761:Nanocomposites; D011108:Polymers / Q000138:chemical synthesis; D045663:Quantum Dots; D013440:Sulfides
D000179:Acrylates; D019187:Cadmium Compounds; D004655:Emulsions; D011108:Polymers; D013440:Sulfides; C498324:poly(n-butyl acrylate); C034939:cadmium sulfide