二元离子型配合物Eu(HFA)_(4)TPP掺杂PMMA薄膜的合成及性能  

Preparation and Properties of Europium(Ⅲ)Tetrakis(Hexafluoroacetylacetone)Complex with Tetraphenylphosphonium as Counter Ion Doped into Polymethyl Methacrylate Films

作　　者：王元 李焕荣[1] WANG Yuan;LI Huan-Rong(School of Chemical Engineering,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学化工学院,天津300300

出　　处：《应用化学》2024年第5期607-615,共9页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(No.22175053);河北省中央引导地方科技发展资金项目(No.206Z1401G)资助

摘　　要：报道了一种光稳定性较好且高发光效率的二元离子型配合物Eu(HFA)_(4)TPP(HFA=六氟乙酰丙酮,TPP=四苯基膦),通过对比Eu(HFA)_(4)Na和Eu(HFA)_(4)TPP配合物的晶体结构和荧光性能,研究其构效关系,揭示了TPP+对配合物发光性能的影响机理。在此基础上,进一步将Eu(HFA)_(4)TPP以高掺杂含量的思路与PMMA结合制备了相应的发光薄膜,Eu(HFA)_(4)TPP受聚甲基丙烯酸甲酯(PMMA)高分子链的包裹和挤压作用,有效扩展了激发光谱范围(240~450 nm),且薄膜的量子效率高达60.54%。并以此为主体构筑了以Eu(HFA)_(4)TPP/PMMA发光薄膜为主体的荧光太阳能聚光器(LSC),在几何聚光比G=1.87的情况下,Eu(HFA)_(4)TPP/PMMA薄膜对LSC光学转换效率贡献值为0.95%,在光伏领域具有潜在的应用前景。In this paper,the complex Eu(HFA)_(4) TPP(HFA=Hexafluoroacetylacetone,TPP=tetraphenylphosphonium)with high photoluminescence quantum yield and improved stability is prepared.The steric effect on luminescence performance is revealed by studying the crystal structures and luminescence properties of Eu(HFA)_(4) Na and Eu(HFA)_(4) TPP complexes.On this basis,the luminescent films are obtained by incorporating Eu(HFA)_(4)TPP complex with high loading content into polymethyl methacrylate(PMMA)matrix,which shows a visible-light excitation window(240~450 nm)and high photoluminescence quantum yield of 60.54%.In addition,the luminescent solar concentrators(LSC)in Eu(HFA)_(4)TPP/PMMA film conformation is prepared.The optical conversion efficiency contribution of Eu(HFA)_(4) TPP/PMMA film to the LSC is 0.95%in the case of the G=1.87,holding promise in photovoltaic fields.

关 键 词：稀土配合物 发光薄膜 光稳定性 可见光激发 荧光太阳能聚光器 

分 类 号：O611[理学—无机化学]