光谱学与光谱分析, 2009, 29 (4): 891, 网络出版: 2010-05-25
铕铽共掺稀土聚合物的光谱分析及发光性能研究
Spectral Analysis and Photoluminescence Properties of Eu-Tb Codoped Polymer
稀土聚合物 光致发光 原位聚合 红光发射材料 Rare-earth polymer Photoluminescence In-situ polymerization Red emitting material
摘要
合成了一种新型的稀土配合物Eu0.5Tb0.5(TTA)3Phen, 并采用原位乳液聚合法进一步制备了Eu0.5Tb0.5(TTA)3Phen/PMMA稀土聚合物。 利用红外光谱仪(IR)、 电子探针X射线能谱仪等对其结构进行了表征, 利用扫描隧道电子显微镜(SEM)、 荧光光谱仪(FS)等研究了其微观形貌, 并探讨了其发光性能。 结果表明, 聚合物中PMMA与稀土部分Eu0.5Tb0.5(TTA)3Phen通过键合的方式结合, 仍保持Eu0.5Tb0.5(TTA)3Phen原有的发光特性； 在365 nm紫外光的激发下, 产生发光峰在611.8 nm附近、 谱线带宽为10.4 nm的红光发射, 发光亮度高, 色纯度高； Eu0.5Tb0.5(TTA)3Phen/PMMA具有良好的发光性能, 其发光强度与MMA加入的含量有关。
Abstract
In the present paper, Eu0.5Tb0.5(TTA)3Phen was synthesized and Eu0.5Tb0.5(TTA)3Phen/PMMA was prepared by in-situ polymerization. The structure of Eu0.5Tb0.5(TTA)3Phen/PMMA was characterized by FTIR spectra. Microscopic morphology and photoluminescence properties were investigated by SEM photographs and fluorescence spectra. The results indicated that polymer parts were attached with the rare-earth molecular parts in the composite luminescent materials.And Eu0.5Tb0.5(TTA)3Phen/PMMA could emit mostly characteristic fluorescence of europium ion and intense red fluorescence with a peak wavelength at 611.8 nm and a bandwidth of 10.4 nm(Purity: 0.990 5) under UV excitation at 365 nm. Its fluorescence intensity was found to be influenced with the content of MMA. It was demonstrated that Eu0.5Tb0.5(TTA)3Phen/PMMA was an excellent red photoluminescent rare-earth polymer material.
李洁, 许并社, 李迎春, 谢江波. 铕铽共掺稀土聚合物的光谱分析及发光性能研究[J]. 光谱学与光谱分析, 2009, 29(4): 891. LI Jie, XU Bing-she, LI Ying-chun, XIE Jiang-bo. Spectral Analysis and Photoluminescence Properties of Eu-Tb Codoped Polymer[J]. Spectroscopy and Spectral Analysis, 2009, 29(4): 891.
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