Addition of dianions to the aqueous solution of partially protonated polydimethylaminoethylmethacrylate (PDMAEMA) efficiently lead to the  formation of polymer colloidal particles held together by dinegatively charged anions that cross link the  partially protonated PDMAEMA  homopolymer. This procedure is used to incorporate [PtCl6]-2, [PtCl4]2- and [PdCl4]2- as a cross linker into the framework of well defined polymer network colloid particles. TEM and DLS analysis of the colloidal solutions showed the existence of near spherical colloids with the size range between 100 to 300 nm. Zeta potential measurements showed that the particle dispersions have good stability in the pH range of 4.5 to 6.5. Integrating of the metal dianion complexes into polymer colloidal structures and subsequent reduction resulted in formation of small (~1nm) narrowly dispersed metal nanoparticles. Application of this method to form colloid particles is expected to provide a convenient room temperature route for controlled formation of small metal nanopaticles.

Anionically cross linked homopolymer colloids applied in formation of metal nanoparticles

244th National Meeting (2012)

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