Polymer grafting from CdS quantum dots via AGET ATRP in miniemulsion

A.C. Carvalho Esteves, de, L. Bombalski, T. Trindade, K. Matyjaszweski, A.M.M.V. Barros-Timmons

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Abstract

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.
Original languageEnglish
Pages (from-to)1230-1236
Number of pages7
JournalSmall
Volume3
Issue number7
DOIs
Publication statusPublished - 2007

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    Carvalho Esteves, de, A. C., Bombalski, L., Trindade, T., Matyjaszweski, K., & Barros-Timmons, A. M. M. V. (2007). Polymer grafting from CdS quantum dots via AGET ATRP in miniemulsion. Small, 3(7), 1230-1236. https://doi.org/10.1002/smll.200600510