Preparation and properties of RE^(3+) doped luminescent co-polymer by solution copolymerization  

作　　者：严长浩 许传杰 胡红辉 王蓉 张明 邱关明 

机构地区：[1]College of Materials Science and Engineering,Nanjing University of Technology [2]College of Chemistry and Chemical Engineering,Yangzhou University [3]School of Materials and Engineering,Changchun University of Science and Engineering

出　　处：《Journal of Rare Earths》2009年第5期761-766,共6页稀土学报（英文版）

基　　金：Project supported by the Special Funds for Major State Research Projects;the National Natural Science Foundation of China (50373034)

摘　　要：Bonded type RE3+ doped luminescent co-polymer was synthesized by solution free radical copolymerization. The influence of charge sequence, monomers and co-polymerized method on properties and structures of the co-polymers was studied. The emission intensity of the co-polymers at different RE3+ concentrations was tested. The results showed that the co-polymers of Eu-PSt and Eu-PMMA both had wide absorption peak at 200-400 nm and the strongest peak appeared at 235 nm. The fluorescent intensity of Eu3+ doped polystyrene co-polymer was stronger than that of Eu3+ doped PMMA copolymer. The characteristic emission of europium ions was observed in the co-polymers. The copolymer doped with rare earth elements showed the 'sensitization effect' for the central ions. The bonded-type rare earth copolymer not only enhanced the energy transfer efficiency, but also improved the fluorescence intensity by increasing the rigidity of main and side chain.Bonded type RE3+ doped luminescent co-polymer was synthesized by solution free radical copolymerization. The influence of charge sequence, monomers and co-polymerized method on properties and structures of the co-polymers was studied. The emission intensity of the co-polymers at different RE3+ concentrations was tested. The results showed that the co-polymers of Eu-PSt and Eu-PMMA both had wide absorption peak at 200-400 nm and the strongest peak appeared at 235 nm. The fluorescent intensity of Eu3+ doped polystyrene co-polymer was stronger than that of Eu3+ doped PMMA copolymer. The characteristic emission of europium ions was observed in the co-polymers. The copolymer doped with rare earth elements showed the 'sensitization effect' for the central ions. The bonded-type rare earth copolymer not only enhanced the energy transfer efficiency, but also improved the fluorescence intensity by increasing the rigidity of main and side chain.

关 键 词：LUMINESCENCE bonded-type rare earth co-polymers radical copolymerization sensitization effect 

分 类 号：TG146.45[一般工业技术—材料科学与工程]