Gold Nanoparticles under visible light irradiation has heating characteristics,with PAMAM encapsulating after irradiated with light has a strong cytotoxicity, and can be widely applied in the field of detection and tumor therapy. PAMAM with PEG-grafted polymer has height controllability on molecular weight, good biocompatibility, encapsulating capacity of gold nanoparticles, gold nanoparticles in the growth of its internal norms, and therefore can be used as ideal carrier for gold nanoparticles.Weihai CY Dendrimer Technology Co.,Ltd forwards from "PEG-Attached PAMAM Dendrimers Encapsulating Gold Nanoparticles:Growing Gold Nanoparticles in the Dendrimers for Improvement of Their Photothermal Properties"Yasuhito Umeda, Chie Kojima, Atsushi Harada, Hiromichi Horinaka, and Kenji Kono Osaka Prefecture University Bioconjugate Chem. 2010, 21, 1559–1564