Abstract: Poly(amido amine)(PAMAM) dendrimers with different terminal groups and generations were synthesized from ethylene amine and methyl acrylate via diffusion method, and the product was characterized using infrared spectra. PAMAM capped CdSe@CdS core-shell structure quantum dots was prepared taking G5.0-NH2 PAMAM as templates at room temperature in dimethyl sulfoxide(DMSO) and characterized using UV-Vis absorption spectra and photoluminescence(PL) emission spectra. The coating of CdS on the surface of CdSe quantum dots was confirmed an effective method of enhancing photoluminescence property of CdSe quantum dots. Compared with neat CdSe quantum dots, the PL intensity of CdSe@CdS quantum dots was enhanced by 123 %.

Key words: poly(amido amine), dendrimers, quantum dots, core-shell structure, photoluminescence