CAJ | 학술논문

以 Eu3+为中心离子,2-羟基喹啉-4-羧酸(H2 hqc)、1,10-菲罗啉(Phen)和三苯基氧磷(TP-PO)为配体,合成了新型配合 Eu(Hhqc)3(H2 O)、Eu(Hhqc)3 Phen(H2 O)5和 Eu(Hhqc)3 TPPO(H2 O)5.用元素分析和红外光谱对配合物进行了表征,IR 表明配合物 Eu(Hhqc)3 Phen(H2 O)5的Δν值大于钠盐Δν值,配合物中羧酸根以单齿方式配位.而配合物 Eu(Hhqc)3(H2 O)和 Eu(Hhqc)3 TPPO(H2 O)5Δν值均小于钠盐的Δν值,表明配合物中羧酸根与 Eu3+呈螯合双齿配位方式.室温下测定了配合物的荧光光谱,研究了它们的荧光性能.结果表明,配合物均在581,594,615,654和703 nm附近产生五条谱带,为Eu3+的特征发射,归属为5D0→7FJ(J=0,1,2,3,4)能级间的跃迁,第二配体Phen和TPPO的引入对Eu3+的荧光发射有明显增强作用,且Phen效果更好.
이 Eu3+위중심리자,2-간기규람-4-최산(H2 hqc)、1,10-비라람(Phen)화삼분기양린(TP-PO)위배체,합성료신형배합 Eu(Hhqc)3(H2 O)、Eu(Hhqc)3 Phen(H2 O)5화 Eu(Hhqc)3 TPPO(H2 O)5.용원소분석화홍외광보대배합물진행료표정,IR 표명배합물 Eu(Hhqc)3 Phen(H2 O)5적Δν치대우납염Δν치,배합물중최산근이단치방식배위.이배합물 Eu(Hhqc)3(H2 O)화 Eu(Hhqc)3 TPPO(H2 O)5Δν치균소우납염적Δν치,표명배합물중최산근여 Eu3+정오합쌍치배위방식.실온하측정료배합물적형광광보,연구료타문적형광성능.결과표명,배합물균재581,594,615,654화703 nm부근산생오조보대,위Eu3+적특정발사,귀속위5D0→7FJ(J=0,1,2,3,4)능급간적약천,제이배체Phen화TPPO적인입대Eu3+적형광발사유명현증강작용,차Phen효과경호.
Three novel europium complexes,Eu (Hhqc)3 (H2O),Eu (Hhqc)3Phen (H2O)5 and Eu (Hhqc)3TPPO(H2O)5 were synthesized using 2-Hydroxyquinoline-4-carboxylic acid(H2hqc),1,10-phenanthroline (Phen)and triphenyl phosphine oxide (TPPO)as the ligands.The complexes were char-acterized by elemental analysis and infrared spectrum.The IR spectra indicated that the complex Eu (Hhqc)3 Phen(H2 O)5 has a largerΔνthan that of NaHhqc,and carboxylate ions in the phenylglyoxyate are coordinated as monodentate ligands.TheΔνvalues of the Eu(Hhqc)3 (H2 O)and Eu(Hhqc)3 TPPO-(H2 O)5 are smaller than that of NaHhqc,the carboxylate ions coordinate to Eu3+ with bidentate che-lating mode.The fluorescence properties of the complexes were studied at room temperature.Each com-plex shows five emission bands at 581,594,615,654 and 703nm,which are assigned to the characteris-tic emission 5D0→7FJ(J=0,1,2,3,4)transitions of Eu3+,respectively.The fluorescence intensity becomes stronger after the additions of Phen and TPPO,and Phen is better.