Synthesis and fluorescence properties of the europium(III) chelate of a polyacid derivative of terpyridine. |
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| Authors: | Zhen Wang Jingli Yuan Kazuko Matsumoto |
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| Institution: | Department of Chemistry, Advanced Research Institute for Science and Engineering, Waseda University, Shinjuku-ku 169-8555, Tokyo, Japan. |
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| Abstract: | A new polyacid derivative ligand of biphenyl-substituted terpyridine, 4'-(biphenyl-4'-yl)-2,2':6'2'-terpyridine-6,6'-diyl]bis(methylenenitrilo)tetrakis(acetic acid) was synthesized, and the fluorescence properties of its Eu3+ and Tb3+ chelates were investigated. The Eu3+ chelate of the ligand is strongly fluorescent, with a fluorescence quantum yield of 0.156, molar absorption coefficient of 2.95 x 10(4) mol/L/cm at molar absorption maximum of 336 nm, and fluorescence lifetime of 1.29 ms, whereas its Tb3+ chelate is non-fluorescent. |
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