Synthesis of gold functionalized poly-bisvinylethyleneurea/silica hybrid materials.
Novel gold/poly-(1,3-divinyl-imidazolid-2-one)/silica [poly-bisvinylethyleneurea (poly-BVU)/silica)] hybrid particles have been produced by adsorption and spontaneously occurring in situ reduction of Au(3+) cations on the surface of poly-BVU/silica hybrid particles. The successful functionalization of the poly-BVU/silica particles with gold nanoclusters has been evidenced by UV/vis and XPS spectroscopy as well as scanning electron microscopy. The size of the resulting gold clusters, estimated by means of the Mie-Drude theory on the full peak width at half-maximum of the surface plasmon UV/vis absorbance, correlates with the polymer content of the poly-BVU/silica hybrid particles used for the modification. Therefore, it is possible to control the size of the gold clusters simply by adjusting the monomer/silica ratio in the polymerization process, which corresponds with the polymer content of the hybrids.
Meyer
Torsten
T
Department of Polymer Chemistry, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, D-09107, Chemnitz, Germany.
Spange
Stefan
S
Simon
Frank
F
D001672:Biocompatible Materials / Q000138:chemical synthesis*; D006046:Gold / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D011145:Polyvinyls / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*; D014508:Urea / Q000031:analogs & derivatives*
D001672:Biocompatible Materials; D011108:Polymers; D011145:Polyvinyls; C045786:polyurea; D006046:Gold; D012822:Silicon Dioxide; D014508:Urea