红光材料双β-二酮铕配合物的合成、结构与发光性质

Synthesis,Crystal Structure and Photoluminescence Property of Red-Light Material of Eu^(3+)-bis(β-diketonate) Complex

通过分子设计,合成了一种新颖的双β-二酮配体N-正丁基-3,6-二(1,3-丁二酮基)咔唑(H2L)及其铕配合物。单晶X衍射测定了H2L的晶体结构。配体和配合物的红外光谱和电子光谱表明,Eu3+与H2L发生螯合配位。配体的荧光光谱是宽带的蓝色发光,属H2L*→H2L跃迁,而配合物的溶液荧光光谱除了配体的蓝光带外,还有611 nm处的Eu3+的特征红光,属5D0→7F2跃迁带;配合物的光致发光光谱只有613 nm处为Eu3+的特征红光,属5D0→7F2跃迁带,峰形尖锐,单色性好,表明该配合物为一种潜在的红色发光材料。

By molecular designing, a new bis （β-diketonate） ligand 3,6-bis （ 1,3-butyldiktone）-9-n-buthylcarbazole （H2L） and its Eu^3＋ complex were synthesized and characterized by single crystal X-ray diffraction, IR and Uv-vis spectra. In the photo-luminescence spectrum of liquid complex, the 611nm emission was attributed to ^5D0→^7F2 of Eu^3＋ ion and thewide blue band could be assigned to H2L→H2L. The photoluminescence of solid complex indicated that there is only a sharp and strong red peak at 613 nm, which was attributed to 5D0→^7TF2 of Eu^3＋ ion. The resuits showed that this Eu^3＋ complex would be a promising red light material.