Synthesis of Silver Nanoparticles Using a Novel Graft Copolymer and Enhanced Particle Stability via a  Polymer Brush Effect

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Titre du document / Document title

Synthesis of Silver Nanoparticles Using a Novel Graft Copolymer and Enhanced Particle Stability via a "Polymer Brush Effect"

Auteur(s) / Author(s)

VIVEK A. V.⁽¹⁾ ; PRADIPTA S. M.⁽¹⁾ ; DHAMODHARAN R.⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾Department of Chemistry, Indian Institute of Technology, Madras, Chennai, INDE

Résumé / Abstract

Polymer-encapsulated silver nanoparticles were synthesized and sterically stabilized by a new core-shell type system consisting of poly(S-alt-MA)-graft-PMMA copolymer that acts as a scaffold for the synthesis of size confined nanoparticles. The graft copolymer is synthesized via ambient temperature ATRP using the CuBr/PMDETA catalytic system at ambient temperature. The graft copolymer is hypothesized to function as a scaffold with the anhydride part interacting strongly with the silver ions, while the PMMA graft functions as a polymer brush that stabilizes the dispersion and prevents the particle aggregation due to a 'polymer brush effect'. UV absorption and TEM studies confirm that the synthesized silver composite particles have a core-shell structure.

Revue / Journal Title

Macromolecular rapid communications ISSN 1022-1336

Source / Source

2008, vol. 29, n^o9, pp. 737-742 [6 page(s) (article)] (42 ref.)

Langue / Language

Anglais

Editeur / Publisher

Wiley, Weinheim, ALLEMAGNE (1994) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 4111 R, 35400019585539.0060

Nº notice refdoc (ud4) : 20316800