INVESTIGATION ON SEMICONDUCTOR NANOPARTICLES PREPARED IN POLYMERIC MATRICES
S. PERETZ, E. TEODOR, M. ELISA, B. SAVU

Abstract. The effect of some polymers like chitosan, alginate, carragennan, polyvinyl pyrrolidone or copolymer maleic anhydride/styrene, upon physico-chemical properties of nanoparticles generated in the polymeric phase was investigated. The size of nanoparticles was determined by fitting the absorbance data with some specific equations from quantum dots’ literature. The fluorescence properties of the nanoparticles depend on the nature of capping polymer. The synthesized nanoparticles were dispersed in polymeric matrix and then were applied on glass support to form films. The properties of the prepared nanoparticles and also the deposited films were investigated by using confocal laser scanning microscopy, UV-Vis spectroscopy and fluorescence spectroscopy.
The nanoparticles coated with polymers present low toxicity against cultured with Vero cells for a determined period of time. The toxicity diminishes up to 10 times by covering the semiconductor nanoparticles with polymers.