Synthesis of metal particles in nanoreactors made from amphiphilic polyesters

PMSE 414

Ananiy M. Kohut, Ananiy.Kohut@ndsu.edu1, Andriy S. Voronov, andrejvoronov@hotmail.com1, Serhiy V. Vasylyev, s.vasylyev@lfg.uni-erlangen.de2, and Wolfgang Peukert, andriy.voronov@ndsu.edu2. (1) Coatings and Polymeric Materials, North Dakota State University, 1735 NDSU Research Park Drive, P.O. Box 5376, Fargo, ND 58105, (2) Institute of Particle Technology, University Erlangen - Nuremberg, Cauerstrasse 4, Erlangen, 91058, Germany
A simple and fast ‘one pot' method for silver, gold, and palladium nanoparticle synthesis in aqueous and organic solutions is offered. The synthesis has been carried out in nanoreactors developed from amphiphilic polyesters. Dispersed in organic solvents such as benzene, aqueous solutions of metal precursors have been transferred through the solvent into the nanoreactors. The precursors are trapped in the polymeric domains and are directly reduced therein. The size and shape of the developed nanoparticles is controlled by the size and shape of the hydrophilic micelle interior, where nucleation and growth of the particles occur. The reduction of the gold and palladium precursor has also been realized in aqueous solutions that resulted in the formation of nanorods. The amphiphilic polymers act as both reducing and stabilizing agent of the metal nanoparticles providing their dispersibility in polar and non-polar media. The mechanism of the reduction of metal precursors is considered.
 

Synthesis and Self-Assembly Approaches to Polymer-Inorganic Hybrid Nanoparticles
1:30 PM-4:10 PM, Wednesday, April 9, 2008 Hilton New Orleans Riverside -- Grand Salon 24, Oral

Division of Polymeric Materials: Science & Engineering

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008