Regioselective catalyzed modification of poly(methylhydro)siloxane using RuRh and RuPt bimetallic dendrimer-encapsulated nanoparticles
Article first published online: 21 APR 2011
Copyright © 2011 Wiley Periodicals, Inc.
Journal of Applied Polymer Science
Volume 122, Issue 1, pages 334–341, 5 October 2011
How to Cite
Peng, X., Pan, Q. and Lu, X. (2011), Regioselective catalyzed modification of poly(methylhydro)siloxane using RuRh and RuPt bimetallic dendrimer-encapsulated nanoparticles. J. Appl. Polym. Sci., 122: 334–341. doi: 10.1002/app.34178
- Issue published online: 5 JUL 2011
- Article first published online: 21 APR 2011
- Manuscript Accepted: 16 JAN 2011
- Manuscript Received: 22 JUL 2010
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (SRF for ROCS, SEM)
- bimetallic nanoparticles;
- catalyst selectivity
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 NaBH4. 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.