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J Am Chem Soc. 2009 Feb 4;131(4):1352-3. doi: 10.1021/ja8079934.

A facile synthesis of asymmetric hybrid colloidal particles.

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  • 1Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA.


This paper describes a simple approach to the synthesis of asymmetric, hybrid colloidal particles by precipitation polymerization. The key is to introduce Au or Ag colloids 2 min after (rather than before) starting the polymerization. The hybrid particles were uniform in size, and each one of them only contained one Au (or Ag) nanoparticle in its surface. Due to the simplicity of this procedure, it should be possible to use it for large-scale production. This method can be extended to metal nanoparticles other than Au and Ag and with a range of sizes, as long as they have appropriate stabilizers on the surface.

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