title: Gold-loaded carbon nanoparticles from poly(vinyl alcohol)-b-poly(acrylonitrile) non-shell-cross-linked micelles.
abstract: Herein we show that a new amphiphilic poly(vinyl alcohol)-b-poly(acrylonitrile) block copolymer dispersed in water can be easily loaded with gold nanoparticles by addition of chlorauric acid followed by reduction by sodium borohydride. After deposition of the so-loaded micelles onto a silicon wafer, followed by an appropriate thermal treatment, the poly(acrylonitrile) core of the micelles is carbonized, while the poly(vinyl alcohol) shell is completely decomposed and volatilized, leading to gold encapsulated in carbon nanoparticles. The morphology of the micelles is maintained during thermal treatment without requiring shell-cross-linking of the micelles prior to pyrolysis.
authors: Center for Education and Research on Macromolecules (CERM), Department of Chemistry, University of Liege, Sart-Tilman B6a, 4000 Liège, Belgium.
authors: Rayna
authors: R
authors: Bryaskova
authors: Nicolas
authors: N
authors: Willet
authors: Anne-Sophie
authors: AS
authors: Duwez
authors: Antoine
authors: A
authors: Debuigne
authors: Laurent
authors: L
authors: Lepot
authors: Bernard
authors: B
authors: Gilbert
authors: Christine
authors: C
authors: Jérôme
authors: Robert
authors: R
authors: Jérôme
authors: Christophe
authors: C
authors: Detrembleur
mesh_terms: D000181:Acrylonitrile / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D003432:Cross-Linking Reagents / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D008823:Micelles; D053758:Nanoparticles / Q000737:chemistry*; D011142:Polyvinyl Alcohol / Q000737:chemistry; D011145:Polyvinyls / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry
chemical_list: D003432:Cross-Linking Reagents; D008823:Micelles; D011145:Polyvinyls; C544705:poly(vinyl alcohol)-b-poly(acrylonitrile); D002244:Carbon; D006046:Gold; D012822:Silicon Dioxide; D011142:Polyvinyl Alcohol; D000181:Acrylonitrile