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成功地合成一种新的四齿配体2,5-二(4-((2-吡啶-1氢-苯并[d]嘧唑)甲基)苯基)-1,3,4-二唑(L),并且将该配体作为第二配体合成出双核Eu3+配合物[Eu(TTA)3]2L(TTA二2-噻吩三氟甲基乙酰丙酮),配合物[Eu(TTA)3]2L的结构用红外光谱,吸外-可见吸收光谱进行了充分表征.为了讨论配体L对[Eu(TTA)3]2L发光性质的影响,将[Eu(TTA)3]2L和Eu(TTA)3(H2O)2的激发光谱、发射光谱进行了对比.发现以其他发射峰为标准时,配合物[Eu(TTA)3]2L位于612 nm,源于5D0→7F2跃迁的发射峰,与配合物Eu(TTA)3(H2O)2的发射峰相比具有增强现象.这一现象表明配体L参与配位以后,可能改变了Eu3+离子周围的环境,并且导致Eu3+离子5D0→7F2跃迁的选择性激发.
A new tetradentate ligand, 2,5-bis (4 - ((2-pyridin-1-yl) phenyl) -1,3,4-bis (TTA) 2-thienyltrifluoromethylacetylacetonate) and complex [Eu (TTA) 3] 2L were synthesized using this ligand as the second ligand. 3] 2L was characterized by IR and absorption-absorption spectra.In order to discuss the effect of ligand L on the luminescent properties of [Eu (TTA) 3] 2L, [Eu (TTA) 3] 2L and Eu (TTA) 3 (H2O) 2 was compared with that of the emission spectrum of TTA 3 (H2O) 2. It was found that Eu (TTA) 3] 2L was at 612 nm and originated from the emission peak of 5D0 → 7F2 transition, With the enhancement of the emission peak of the Eu (TTA) 3 (H2O) 2. This phenomenon indicates that ligand L may change the environment around the Eu3 + ions and lead to the transition of Eu3 + ions 5D0 → 7F2 Selective stimulation.