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Regioselective catalyzed modification of poly(methylhydro)siloxane using RuRh and RuPt bimetallic dendrimer‐encapsulated nanoparticles
Author(s) -
Peng Xiaohong,
Pan Qinmin,
Lu Xiaoran
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34178
Subject(s) - bimetallic strip , dendrimer , ruthenium , catalysis , materials science , regioselectivity , nanoparticle , siloxane , alloy , polymer chemistry , chemical engineering , nanotechnology , chemistry , organic chemistry , polymer , composite material , engineering
RuRh and RuPt bimetallic dendrimer‐encapsulated nanoparticles (DENs) were successfully prepared by a two‐step process involving co‐complexation, using ruthenium and rhodium or ruthenium and platinum complex ions with partially quaternized fifth‐generation poly(amidoamine) (G5‐Q), and then coreduction with NaBH 4 . UV–vis, transmission electron microscope, and laser scattering analyses were used to characterize the bimetallic alloy DENs. The regioselective synthesis of multifunctional hybrid poly(methylhydro)siloxane was achieved by the RuRh and RuPt alloy nanoparticle catalysts. The experimental results showed that the RuRh and RuPt bimetallic DENs presented higher catalytic activity than physical mixtures of their monometallic DENs, respectively. This should be due to synergistic electronic effect of RuRh and RuPt alloy catalysts. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011.