通过微乳液聚合和硫醇-烯官能化制备定制的复合聚合物-金属纳米颗粒

Tailored Composite Polymer-Metal Nanoparticles by Miniemulsion Polymerization and Thiol-ene Functionalization.

作者信息

van Berkel Kim Y, Hawker Craig J

机构信息

Materials Research Laboratory and Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106.

出版信息

J Polym Sci A Polym Chem. 2010 Apr 1;48(7):1594-1606. doi: 10.1002/pola.23917.

A simple and modular synthetic approach, based on miniemulsion polymerization, has been developed for the fabrication of composite polymer-metal nanoparticle materials. The procedure produces well-defined composite structures consisting of gold, silver or MnFe(2)O(4) nanoparticles (∼10 nm in diameter) encapsulated within larger spherical nanoparticles of poly(divinylbenzene) (∼100 nm in diameter). This methodology readily permits the incorporation of multiple metal domains into a single polymeric particle, while still preserving the useful optical and magnetic properties of the metal nanoparticles. The morphology of the composite particles is retained upon increasing the inorganic content, and also upon redispersion in organic solvents. Finally, the ability to tailor the surface chemistry of the composite nanoparticles and incorporate steric stabilizing groups using simple thiol-ene chemistry is demonstrated.

基于微乳液聚合，已开发出一种简单且模块化的合成方法，用于制备复合聚合物-金属纳米颗粒材料。该方法可制备出结构明确的复合材料，其由直径约10 nm的金、银或MnFe₂O₄纳米颗粒封装在直径约100 nm的聚（二乙烯基苯）较大球形纳米颗粒中组成。这种方法能够轻松地将多个金属域整合到单个聚合物颗粒中，同时仍保留金属纳米颗粒有用的光学和磁性特性。增加无机含量时，以及在有机溶剂中重新分散时，复合颗粒的形态均得以保留。最后，展示了使用简单的硫醇-烯化学方法定制复合纳米颗粒表面化学并引入空间稳定基团的能力。