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Gold‐Loaded Carbon Nanoparticles from Poly(vinyl alcohol)‐ b ‐poly(acrylonitrile) Non‐Shell‐Cross‐Linked Micelles
Author(s) -
Bryaskova Rayna,
Willet Nicolas,
Duwez AnneSophie,
Debuigne Antoine,
Lepot Laurent,
Gilbert Bernard,
Jérôme Christine,
Jérôme Robert,
Detrembleur Christophe
Publication year - 2009
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.200900130
Subject(s) - vinyl alcohol , acrylonitrile , micelle , copolymer , materials science , polymer chemistry , nanoparticle , amphiphile , chemical engineering , colloidal gold , carbonization , chemistry , organic chemistry , aqueous solution , polymer , nanotechnology , composite material , scanning electron microscope , engineering
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.