THE EFFECT OF MACROCYCLE STRUCTURE IN POLYMERIC AZACROWN ETHERS ON THE STABILITY OF GOLD HYDROSOL

The stability of gold hydrosol in the presence of different azacrown e thers immobilized on polymeric matrices (PACE) was studied by dynamic light scattering. The specificity of the interaction between PACE and ionic gold was shown to be retained for gold hydrosol. The flocculatin g action of the polymer reagents is determined by the macrocycle compo sition and the structure of the polymeric matrix. The reactive crown-e ther group ensures the selectivity of the macromolecule-particle inter action. The structure of the adsorption layer determines the interpart icle interactions and, hence, influences the dispersion stability.