Synthesis and Optical Properties of ZnO Nanoparticles in Submicron PS Hollow Reactors  

作　　者：Xue-feng Huang Fei-fei Ju Mo-zhen Wang Xue-wu Ge 

机构地区：[1]CAS Key Laboratory of Soft Matter Chemisry, Department of Polymer Science and Engineering,University of Science and Technology of China, Hefei 230026, China

出　　处：《Chinese Journal of Chemical Physics》2012年第6期719-724,I0004,共7页化学物理学报（英文）

摘　　要：ZnO nanoparticles were first encapsulated in submicron PS hollow microspheres through two-step swelling process of core-shell structured PMMA/PS （PMMA： polymethyl methao- rylate） microspheres in acid-alkali solution, and the ZnO precursors, i.e. the ethanol solu- tions of （CHaCOO）2Zn and LiOH. The transmission electron microscope, X-ray diffraction, and thermogravimetric analysis results show that the feeding order of ethanol solutions of （CH3COO）2Zn and LiOH in the second swelling step has great influence on the loading efficiency and the size of ZnO nanoparticles, but little on their crystal form. The photolumi- nescence and UV-Vis absorption behavior of ZnO/PS microspheres show that the PS shell can effectively avoid the fluorescence quenching effect.

关 键 词：ZnO/PS hybrid material Core-shell polymer SWELLING PS hollow microsphere Optical property 

分 类 号：TN304.21[电子电信—物理电子学] TN305.7