Using chitosan

a process was developed to prepare nanocrystalline manganese-doped zinc sulfide by anion-coordination method. Chitosan that contains ligand groups acts not only as a polymer matrix but also as a surfactant. By the reaction of zinc acetate and manganese acetate mixture in chitosan film with sodium solution

particles sizes(4.0～7.0nm by caculation) were obtained by controling of reactant concentration

and managanese was successfully doped. The optical characteristics were observed by PLE and PL spectroscopy. The coordination of the chitosan to the nanoparticle surface was investigated by FTIR spectroscopy.