Synthesis and applications of palladium-coated poly(vinylpyridine) nanospheres

被引：151

作者：

Pathak, S

Greci, MT

Kwong, RC

Mercado, K

Prakash, GKS ^{[1
]}

Olah, GA

Thompson, ME

机构：

[1] Univ So Calif, Loker Hydrocarbon Res Inst, Los Angeles, CA 90089 USA

[2] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA

来源：

CHEMISTRY OF MATERIALS | 2000年 / 12卷 / 07期

关键词：

D O I：

10.1021/cm0001556

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Monodisperse poly(4- and poly(2-vinylpyridine) nanospheres in the 500 nm diameter range were prepared by emulsifier-free emulsion polymerization techniques under free radical initiation of the respective monomers with 4 wt % divinylbenzene as the cross-linking agent. The size, integrity, and nature of the nanospheres were investigated by Scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray analysis, Auger spectroscopy, and Fourier-transform infrared spectroscopy measurements. The rigid and highly stable nanospheres with exposed pyridine nitrogen on the surface serve as an excellent support; for Pd-0 nanoparticles in the range of 1-4 nm. The Pd-coated nanospheres were also characterized by transmission electron microscopy and inductively coupled plasma mass spectrometry measurements. Four weight percent palladium-coated nanospheres serve as good catalysts for Suzuki-, Heck-, and Stille-type coupling reactions for carbon-carbon bond formation.

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页码：1985 / 1989

页数：5

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