[两种铽（III）配合物的合成、晶体结构及荧光性质]

[Synthesis, Crystal Structure and Fluorescence Properties of Two Tb(III) Complexes].

作者信息

Fan Ting-ting, Song Shuang, Zhang Yi-hua, Huo Rui, Li Xia, Ding Xing-yi, Liu Yang, Zhao Xu, Yan Chun-hui

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2015 Jul;35(7):1917-20.

Abstract

Two coordination polymers with formula of [Tb(3-SBA) (IP)OH(H2O)] · H2O(1) and [Tb(dpdc)1.5 (IP) (H2O)]n (2) (3-SBA==3-sulfobenzoate, dpdc=2,2'-diphenyldicarboxylate and IP=1H-imidazo[4,5-f][1,10]-phenanthroline) have been synthesised under hydrothermal condition and characterizated by X-ray single crystal diffraction. The complex 1 possesses a 1D chain structure constructed from Tb(III) ions by 3-SBA ligands and OH groups. Complex 2 shows a 1D chain structure constructed from Tb(III) ions by dpdc ligands. The two complexes display the characteristic (5)D4-->7Fj (J=6-3) transitions at 492, 544,584 and 619 nm of Tb(III) ion, respectively. No emission from the ligand could be observed, which indicates that the ligands absorb and transfer energy efficiently to central Tb( M) ion. The emission decay curves reveal a monoexponential behaviour yielding the lifetime values of 0.287 ms for 1 and 0.439 ms for 2. The quantum yields of luminescence are 9.28% for 1 and 7.07% for 2.

摘要

在水热条件下合成了两种配位聚合物，化学式分别为[Tb(3-SBA)(IP)OH(H₂O)]·H₂O(1)和[Tb(dpdc)₁.₅(IP)(H₂O)]ₙ(2)（3-SBA = 3-磺酸苯甲酸根，dpdc = 2,2'-二苯基二羧酸根，IP = 1H-咪唑并[4,5-f][1,10]-菲咯啉），并通过X射线单晶衍射进行了表征。配合物1具有由Tb(III)离子通过3-SBA配体和OH基团构建的一维链状结构。配合物2显示出由Tb(III)离子通过dpdc配体构建的一维链状结构。这两种配合物分别在492、544、584和619 nm处显示出Tb(III)离子的特征(⁵D₄→⁷Fⱼ，J = 6 - 3)跃迁。未观察到配体的发射，这表明配体有效地吸收并将能量转移到中心Tb(III)离子。发射衰减曲线呈现单指数行为，配合物1的寿命值为0.287 ms，配合物2的寿命值为0.439 ms。配合物1的发光量子产率为9.28%，配合物2的发光量子产率为7.07%。