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Facile One‐Pot Synthesis of Functional Gold Nanoparticle–Polymer Hybrids Using Ionic Block Copolymers as a Nanoreactor
Author(s) -
Ahn Hyungmin,
Park Moon Jeong
Publication year - 2011
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201100449
Subject(s) - nanoreactor , copolymer , materials science , colloidal gold , ionic bonding , polymer , nanoparticle , styrene , polymer chemistry , functional polymers , hybrid material , chemical engineering , ionic conductivity , nanotechnology , ion , electrode , chemistry , organic chemistry , composite material , electrolyte , engineering
A highly versatile approach to fabricate functional gold nanoparticle (AuNP)‐polymer hybrids is demonstrated by employing sulfonated block copolymers. The 3–5 nm sized ionic domain of the sulfonated poly(styrene‐ block ‐methylbutylene) (S n MB m ) copolymers can be utilized as a nanoreactor where the Au ions can be selectively sequestered and reduced to AuNPs using a simple photochemical method. The size of the AuNPs can be adjusted in fine‐steps from 2.0 ± 0.3 to 3.9 ± 0.5 nm by changing the sulfonation levels of the S n MB m copolymers. Remarkably, significantly improved methanol oxidation properties are achieved with the hybrid materials owing to the ion conducting–SO 3 H groups and the interconnected network of AuNPs confined within the self‐assembled microstructures, which provides electronic conductivity.