Gold-loaded carbon nanoparticles from poly(vinyl alcohol)-b-poly(acrylonitrile) non-shell-cross-linked micelles.
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.
Bryaskova
Rayna
R
Center for Education and Research on Macromolecules (CERM), Department of Chemistry, University of Liege, Sart-Tilman B6a, 4000 Liège, Belgium.
Willet
Nicolas
N
Duwez
Anne-Sophie
AS
Debuigne
Antoine
A
Lepot
Laurent
L
Gilbert
Bernard
B
Jérôme
Christine
C
Jérôme
Robert
R
Detrembleur
Christophe
C
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
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