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Luminescent and thermal properties of a novel red-emitting silicon fluoride acrylate-Eu(III) copolymer for white LEDs

文献类型： 外文期刊

作者： Hu, Jun 1 ; Xu, Lin 1 ; Xu, Lei 2 ; Tsuboi, Taiju 3 ; Huang, Wei 3 ; Xie, Hongde 1 ;

作者机构： 1.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

2.Jiangsu Acad Agr Sci, Nanjing 210014, Jiangsu, Peoples R China

3.Nanjing Tech Univ, Jiangsu Singapore Joint Res Ctr Organ Bioelect &, Nanjing 211816, Jiangsu, Peoples R China

4.Nanjing Tech Univ, IAM, Nanjing 211816, Jiangsu, Peoples R China

关键词： Optical materials;Polymers;Optical properties;Thermal properties;Luminescence

期刊名称：MATERIALS CHEMISTRY AND PHYSICS （ 影响因子：4.094； 五年影响因子：3.538 ）

ISSN： 0254-0584

年卷期： 2014 年 147 卷 3 期

页码：

收录情况： SCI

摘要： A red-emitting silicon fluoride acrylate (SFA)-Eu(III) copolymer was prepared based on water-in-oil emulsion polymerization method. Its photoluminescence including the temporal decay was studied in addition to the thermal properties. Of the emissions due to the D-5(0) --> F-7(J) (J = 0-4) transitions of Eu3+ ions, an intense red emission due to D-5(0) --> F-7(2) transition was observed at 618 nm under the 395 nm excitation, together with a weak D-5(0) --> F-7(0) emission at 580 nm. Compared with some commercial phosphor, the SFA-Eu(III) copolymer also have a higher QE value. From the optical properties it was suggested that Eu3+ ions were located at the disordered non-inversion Eu3+ sites in the copolymer. The glass transition temperature (T-g) was estimated about -51.5 degrees C from a differential scanning calorimetric curve, while chemical decomposition was estimated to start from 385 degrees C from a thermogravimetry analysis curve. Taking into account the thermal stability in a wide temperature range from -51.5 degrees C to 385 degrees C, the SFA-Eu(III) copolymer is expected to act as a potential red component for near-UV excited white LEDs. (C) 2014 Elsevier B.V. All rights reserved.

  • 相关文献

[1]A novel thermally stable Eu(III) complex-modified acrylate nano-polymer and its luminescence properties. Xu, Lin,Hu, Jun,Xie, Hongde,Xu, Lei,Tsuboi, Taiju,Huang, Wei. 2013

[2]Effects of Hydrolysis Degree of Soy Protein Isolate On the Structure and Performance of Hydrolyzed Soy Protein Isolate/Urea/Formaldehyde Copolymer Resin. Qu, Ping,Huang, Hongying,Wu, Guofeng,Sun, Enhui,Chang, Zhizhou. 2015

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