Polymer grafting from Cds quantum dots via AGET ATRP in miniemulsion

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.

keywords

TRANSFER RADICAL POLYMERIZATION; SEMICONDUCTOR NANOCRYSTALS; ELECTRON-TRANSFER; BLOCK-COPOLYMERS; NANOPARTICLES; BRUSHES; GROWTH; ENCAPSULATION; MONODISPERSE; LUMINESCENT

subject category

Chemistry; Science & Technology - Other Topics; Materials Science; Physics

authors

Esteves, ACC; Bombalski, L; Trindade, T; Matyjaszewski, K; Barros-Timmons, A

our authors

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".