title: Synthesis and fluorescence properties of the europium(III) chelate of a polyacid derivative of terpyridine.
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.
authors.affiliation: Department of Chemistry, Advanced Research Institute for Science and Engineering, Waseda University, Shinjuku-ku 169-8555, Tokyo, Japan.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wang
authors.forename: Jingli
authors.initials: J
authors.lastname: Yuan
authors.forename: Kazuko
authors.initials: K
authors.lastname: Matsumoto
mesh_terms: D000143:Acids / Q000737:chemistry*; D002614:Chelating Agents / Q000138:chemical synthesis* / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry; D008024:Ligands; D015394:Molecular Structure; D011725:Pyridines / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013725:Terbium / Q000737:chemistry
chemical_list: D000143:Acids; D002614:Chelating Agents; D005456:Fluorescent Dyes; D008024:Ligands; D011725:Pyridines; D013725:Terbium; D005063:Europium; C023666:pyridine