Blue luminescence from poly(methyl methacrylate) modified ZnO and anatase TiO<sub>2</sub> nanocrystals prepared using γ radiation期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Blue luminescence from poly(methyl methacrylate) modified ZnO and anatase TiO₂ nanocrystals prepared using γ radiation

Authors:	ZG Wang XT Zu HJ Yu X He S Zhu QM Wei LM Wang

Affiliation:	^aDepartment of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, PR China ^bInternational Center for Material Physics, Chinese Academy of Sciences, Shenyang 110015, PR China ^cDepartment of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109-2104, USA

Abstract:	The surface of ZnO and anatase TiO₂ nanocrystals was modified by PMMA through γ radiation. The modified nanocrystals were investigated with photoluminescence (PL) and Fourier transform infrared (FTIR) spectra. A stable blue luminescence peak (420 nm) can be observed for the modified ZnO and anatase TiO₂ nanocrystals. The intensities of luminescence of the modified ZnO and anatase TiO₂ in aqueous solution are very stable, even unchanged after storage time of one month.

Keywords:	ZnO TiO₂ nanocrystals Poly(methyl methacrylate) γ radiation Photoluminescence
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