Abstract
This investigation shows that in absence of the chemical reductant and the other protective reagents, the host–guest interaction and the molar ratio of dendrimers/Au 3+ other than size and shape of the templates play an important role for the preparation of stable gold hybrid colloids by 60Co γ-ray irradiation using spherical PAMAM-G5 as nonlinear polymeric template. The hybrid colloid resultants comprised of the ordered nano-crystal and the random non-crystal part, which has been confirmed by HRTEM, display spherical structure and the polydispersity of the size distribution in the range of nanometer scale. The dendrimer/gold hybrid colloids are formed by the intramolecular and intermolecular adsorption action between PAMAM-G5 template and gold nanoparticles, respectively.
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