Magnetic cobalt dispersions in poly(dimethylsiloxane) fluids

Magnetic cobalt nanoparticle dispersions in biocompatible poly(dimethylsilo xane) fluids were studied for treating retinal detachments. Dispersions wer e prepared in toluene with triblock poly(dimethylsiloxane-b-(3-cyanopropyl) methylsiloxane-b-dimethylsiloxane) stabilizers where anchor blocks adsorbe d onto the particles and tail blocks provided steric stability. These copol ymers formed micelles in toluene with aggregation dependent on block length s, and dispersion formation also depended on block lengths. The stabilizers could also function as the carrier fluids. (C) 2001 Published by Elsevier Science B.V.