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Synthesis of tetra-layer polymer composite microspheres and the corresponding hollow polymer microspheres with Au nanoparticles functionalized movable cores

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Polymer Chemistry Vol - 1 Issue - 4

Polymer Chemistry Vol - 1 Issue - 3

Polymer Chemistry Vol - 1 Issue - 2

Synthesis of tetra-layer polymer composite microspheres and the corresponding hollow polymer microspheres with Au nanoparticles functionalized movable cores

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Han Yang, Xinlin
Copyright Year	2010
Abstract	Hollow poly(ethyleneglycol dimethacrylate) (PEGDMA) microspheres with Au nanoparticle functionalized movable cores were prepared by selective removal of the sandwiched silica mid-layer from the corresponding poly(ethyleneglycol dimethacrylate-co-methacrylic acid)/poly(ethyleneglycol dimethacrylate-co-vinylpyridine)@gold/silica/PEGDMA (P(EGDMA-co-MAA)/P(EGDMA-co-VPy)@Au/SiO2/PEGDMA) tetra-layer composite microspheres, in which the Au nanoparticles were stabilized by the pyridyl groups on the surface and gel-layer of P(EGDMA-co-MAA)/P(EGDMA-co-VPy) particles during the reduction of HAuCl4 with sodium borohydride. The tetra-layer polymer composite microspheres were synthesized via the combination of distillation precipitation polymerization for the preparation of the polymer core and outer shell layer together with the modified Stöber sol–gel process for the formation of the sandwiched silica mid-layer. The primary results indicated that the Au nanoparticle functionalized movable cores enabled the hollow polymer microspheres to act as efficient catalysts for the reduction of 4-nitrophenol to 4-aminophenol with sodium borohydride as the reductant.
Starting Page	670
Ending Page	677
Page Count	8
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	1
Issue Number	5
Journal	Polymer Chemistry
DOI	10.1039/b9py00372j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Distillation Ethylene glycol 4-Nitrophenol Nanoparticle Carboxylic acid Sol\u2013gel process Aminophenol Polymer Sodium borohydride Silicon dioxide Precipitation polymerization
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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