Synthesis, structure and luminescence properties of binary and ternary complexes of lanthanide (Eu3+, Sm3+ and Tb3+) with salicylic acid and 1,10-phenanthroline
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- 作者：Chen-Qi Shen ; Tian-Lu Yan ; Yi-Ting Wang ; Zi-Jun Ye ; Cun-Jin Xu ; cjxu@hznu.edu.cn ; Wen-Jun Zhou
- 关键词：Luminescence ; Thermal stability ; 1 ; 10-Phenanthroline ; Salicylic acid ; Crystal structure ; Rare earth
- 刊名：Journal of Luminescence
- 出版年：2017
- 出版时间：April 2017
- 年：2017
- 卷：184
- 期：Complete
- 页码：48-54
- 全文大小：1650 K
- 卷排序：184
文摘
A series of binary and ternary complexes of lanthanide (Eu3+, Sm3+ and Tb3+) with salicylic acid (Hsal) and 1,10-phenanthroline (phen) were synthesized, and characterized by element analysis, coordination titration analysis, IR, UV and TG-DTA. Their compositions were (NH4)[Ln(sal)4(H2O)2] (Ln=Eu (1), Sm (2), Tb (3)) and (NH4)[Ln(sal)4(phen)2] (Ln=Eu (4), Sm (5), Tb (6)), respectively. In particular, the ternary complex of Eu3+, 4, was characterized by X-ray diffraction, and luminescence intensities of binary and ternary complexes were compared. In case of Eu3+ and Sm3+ complexes, ternary complexes emitted stronger luminescence than corresponding binary complexes of salicylic acid and Ln3+. On the other hand, the ternary Tb3+ complex had weaker luminescence than the binary complex because of back energy transfer from Tb3+ to phen. The CIE coordinates of 1–6 were calculated as (0.65, 0.35), (0.52, 0.48), (0.33, 0.59), (0.67, 0.33), (0.62, 0.38) and (0.36, 0.58), respectively, which enable these complexes to be promising candidates for red, green, or yellow component in OLEDs.