Synthesis, Characterization and Luminescence Properties of Coordination Compounds of Rare Earth with p-Tert-Butyl-Calix[8] Arene
YAN Lai1, ZHAO Yong-liang1*, ZHAO Feng-ying2, WANG Ling-xuan3, YE Jian-ping3
1. The College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China 2. Department of Fundamental, Inner Mongolia Agriculture University, Hohhot 010019, China 3. Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
Abstract：Fourteen solid coordination compounds of rare earth(Sm3+, Eu3+, Tb3+ and Dy3+ and Ln3+(La3+, Gd3+ and Y3+)-doped Tb3+ with p-tert-butyl-calix[8] arene (LH8) have been synthesized and characterized. Elemental analysis, rare erth complexometry, 1H NMR spectra and TG-DTA have been studied. The results suggest that the complexes have the composition of [RE2(LH2)(DMSO)5]DMSO，[RE2(LH2)(DMF)5]2DMF，[LnTb(LH2)(DMSO)5]DMSO and [LnTb(LH2) (DMF)5]2DMF respectively. Fluorescence spectrum suggests that the Tb3+ complexes have characteristic luminescence, and its fluorescence intensity is enhanced after doping with La3+, Gd3+ and Y3+. The influence of the doping ions and two neutral ligands(DMSO and DMF) has also been discussed. In addition, the fluorescence lifetime of some complexes has been investigated.
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