Preparation and luminescent properties of coordination polymers of terbium and europium with 1,4-bis-(4-methoxycarbonyl-3-hydroxyphenoxycarbonyl)butane |
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| Authors: | I I Zseltvay S B Meshkova N S Novikova R V Kondrat’eva V I Nedostup P G Doga Yu V Skripinets E A Zhikhareva |
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| Institution: | 1. Bogatski Physicochemical Institute, National Academy of Science of Ukraine, Lyustdorfskaya dor. 86, Odessa, 65080, Ukraine
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| Abstract: | Physicochemical properties of new isostructural homo- and heteronuclear coordination polymers of terbium and europium with 1,4-bis-(4-methoxycarbonyl-3-hydroxyphenoxycarbonyl)butane (H2L) differing in the composition have been studied. The Tb2L3·H2O compound has exhibited efficient sensibilized green luminescence, whereas the corresponding europium-containing polymer EuL3·H2O has shown practically no luminescence due to mismatch of energies of the ligand triplet level and the Eu3+ ion emitting level. Heteronuclear terbium-europium polymers (Tb1.5Eu0.5L3·H2O, TbEuL3·H2O, and Tb0.5Eu1.5L3·H2O) show luminescence via the intramolecular transfer of the exiting energy from Tb3+ emitting level to Eu3+. |
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