title: Facile one-pot synthesis of functional gold nanoparticle-polymer hybrids using ionic block copolymers as a nanoreactor.
abstract: 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.
authors.affiliation: Department of Chemistry, Division of Advanced Materials Science (WCU), Pohang University of Science and Technology, Pohang, 790-784, Korea.
authors.forename: Hyungmin
authors.initials: H
authors.lastname: Ahn
authors.forename: Moon Jeong
authors.initials: MJ
authors.lastname: Park
mesh_terms: D060326:Chemistry Techniques, Synthetic / Q000379:methods*; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D011108:Polymers; D006046:Gold