Luminescent Properties of Bi-Rare Earth Complexes with m-methylbenzoic Acid and 1,10-phenanthroline
来源期刊：JOURNAL OF RARE EARTHS2002年第5期
论文作者：王瑞芬 王淑萍 刘翠格
Key words：rare earths; luminescence property; mixed rare earth complex; m-methylbenzoic acid; 1,10-phenanthroline;
Abstract: The bi-rare earth complexes EuTb(m-MBA)6(phen)2*2H2O, TbY(m-MBA)6(phen)2*2H2O were synthesized by the reaction of RECl3 with m-methylbenzoic acid and 1,10-phenanthroline in ethanol solution, where m-MBA=m-methylbenzoate and phen=1,10-phenanthroline. The luminescence properties of the title complexes were studied in comparison with the corresponding complexes Eu2(m-MBA)6(phen)2*2H2O and Tb2(m-MBA)6(phen)2*2H2O respectively. The results indicate that the emission intensity from europium ion can be greatly enhanced by the terbium ion, while the emission from terbium ion was strongly quenched by europium ion in EuTb(m-MBA)6(phen)2*2H2O; the emission intensity from terbium ion can be greatly enhanced by yttrium ion in TbY(m-MBA)6(phen)2*2H2O. The mechanism about the results was discussed.
王瑞芬1，王淑萍1，刘翠格1
(1.Chemistry College, Hebei Normal University, Shijiazhuang 050091, China)
Abstract:The bi-rare earth complexes EuTb(m-MBA)6(phen)2*2H2O, TbY(m-MBA)6(phen)2*2H2O were synthesized by the reaction of RECl3 with m-methylbenzoic acid and 1,10-phenanthroline in ethanol solution, where m-MBA=m-methylbenzoate and phen=1,10-phenanthroline. The luminescence properties of the title complexes were studied in comparison with the corresponding complexes Eu2(m-MBA)6(phen)2*2H2O and Tb2(m-MBA)6(phen)2*2H2O respectively. The results indicate that the emission intensity from europium ion can be greatly enhanced by the terbium ion, while the emission from terbium ion was strongly quenched by europium ion in EuTb(m-MBA)6(phen)2*2H2O; the emission intensity from terbium ion can be greatly enhanced by yttrium ion in TbY(m-MBA)6(phen)2*2H2O. The mechanism about the results was discussed.
Key words:rare earths; luminescence property; mixed rare earth complex; m-methylbenzoic acid; 1,10-phenanthroline;
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