Adjustable Luminescence of SrAl2O4:Eu2+,Dy3+ Assembled in Zeolite
来源期刊：JOURNAL OF RARE EARTHS2004年第1期
论文作者：袁定胜 容建华 黄浪欢 刘应亮 张静娴 王晓华
Key words：zeolite; assemble; blue shift; adjustable; phosphorescence; rare earths;
Abstract: Capsulating guest into the nanometer voids of zeolites is a effective way to form novel host-guest material. In our work, stoichiometric SrAl2O4:Eu2+, Dy3+ sol guest was prepared by sol-gel method and assembled into the nanometer channels of zeolite ZSM-5 host through mechanical mixing, hydrothermal reaction and microwave heating reaction, respectively. After being reduced and diffused in a microwave muffle, the fluorescence spectra of the host-guest materials exhibit remarkable blue shifts in comparison of that of SrAl2O4:Eu2+, Dy3+. Some interesting phenomena in the assembled host-guest materials are that the after-glow emission spectra exist two bands at about 400 nm and 517 nm and the relative strengths of these two bands can be adjusted by changing the assembly methods and the assembly concentration. These are attributed to the fact that the phosphor was capsulated into the voids of zeolite ZSM-5 and generated the quantum size effect and the host-guest effect.
袁定胜1，容建华1，黄浪欢1，刘应亮1，张静娴1，王晓华1
(1.Department of Chemistry, Jinan University, Guangzhou 510632, China)
Abstract:Capsulating guest into the nanometer voids of zeolites is a effective way to form novel host-guest material. In our work, stoichiometric SrAl2O4:Eu2+, Dy3+ sol guest was prepared by sol-gel method and assembled into the nanometer channels of zeolite ZSM-5 host through mechanical mixing, hydrothermal reaction and microwave heating reaction, respectively. After being reduced and diffused in a microwave muffle, the fluorescence spectra of the host-guest materials exhibit remarkable blue shifts in comparison of that of SrAl2O4:Eu2+, Dy3+. Some interesting phenomena in the assembled host-guest materials are that the after-glow emission spectra exist two bands at about 400 nm and 517 nm and the relative strengths of these two bands can be adjusted by changing the assembly methods and the assembly concentration. These are attributed to the fact that the phosphor was capsulated into the voids of zeolite ZSM-5 and generated the quantum size effect and the host-guest effect.
Key words:zeolite; assemble; blue shift; adjustable; phosphorescence; rare earths;
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