Eleven rare earth complexes were synthesized with dibenzoylmethane (HDBM), 1-phenyl-3-biphenyl1,3-dione (HPBPD) as the first ligands and 1, lO-phenanthroline (phen), dipyrido [3,2-a :2',3'-c]quinoxaline ( dpq), dipyrido- [3,2-a: 2', 3'-c]phenazine (dppz) as the second ligands. Their elemental analysis, TG-DTA, UV spectra, IR spectra and fluorescence spectra were measured, the results indicate that the complexes have the compositions of RE(DBM)3L and RE(PBPD)3L · 1/2H20 (RE3+ = Eu3+ ,Tb3+ ;L = phen, dpq, dppz). The molar conductivity shows that all the oomplexes are non-electrolyte. The data of IR spectra and UV spectra indicate that the azatriphenylenes through the N atoms of the phenanthroline moiety and HDBM, HPBPD through oxygen atoms coordinated with RE3+ ions, respectively. The fluorescence spectra data show that the fluorescence intensity of β3-diketone Eu3 + complexes are stronger than the series of complexes of terbium. The abilities of energy transmission of phen and dpq are stronger than dppz. The luminance properties of the rare earth complexes were studied in detail. The triplet state energy of HDBM (20 700 cm-1) is higher than that of Eu3+ 5D0( 17 293 cm-1) and the energy of Tb3+ 5D4(20 454 cm-1 ). In all the ternary complexes, Eu ( Ⅱ ) complexes have strong fluorescence, while the fluorescence intensity of Tb ( Ⅱ ) complexes is less than that of Eu ( Ⅲ ) complexes, which is due to the small difference between the triplet energy of HDBM and the lowest excited state energy of Tb3 ＋. Thus it is possible that energy transfer from HDBM ligand to Eu3 + is more effective. As a high UV absorption coefficient for organic ligands, the energy transfer is effectively to the rare earth luminescent center ion, producing a characteristic emission spectrum.%分别以二苯甲酰甲烷(HDBM)、1-苯基-3-联苯基-1,3-二酮(HPBPD)为第一配体,以邻菲啰啉(phen)、二吡啶并[3,2-a:2',3'-c]哇喔啉(dpq)、二吡比啶并[3,2-a:2',3'-c]吩嗪(dppz)为第二配体合成了11种三元稀土配合物,对它们进行了元素分析、红外光谱、紫外光谱、差热-热重分析、荧光激发和发射光谱的测定.结果表明,配合物的组成为:RE(DBM)3L和RE(PBPD)3L·1/2H2O(RE3+=Eu3+,Tb3+;L=phen,dpq,dppz),所有配合物均为非电解质;β-二酮配体通过羰基氧原子与稀土离子螯合成键,氮杂菲配体配位方式类似于邻菲啰啉,通过两个氮原子配位;β-二酮铕系列配合物较铽系列配合物的发光强度更强,中性配体phen、dpq传递能量的能力强于dppz.几种配合物的发光寿命测定结果表明铽配合物Tb(DBM)3phen的发光寿命较长,发光强度强的Eu(DBM)3dpq配合物发光寿命长于发光强度弱的Eu(DBM)3dppz配合物.
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