Synthesis and bright luminescence of lanthanide (Eu(III), Tb(III)) complexes sensitized with a novel organic ligand
2004; Elsevier BV; Volume: 385; Issue: 5-6 Linguagem: Inglês
10.1016/j.cplett.2003.12.093
ISSN1873-4448
AutoresBao-Li An, Meng Lian Gong, Kok‐Wai Cheah, Jiming Zhang, King‐Fai Li,
Tópico(s)Magnetism in coordination complexes
ResumoA novel organic ligand, 6-[(benzylamino) carbonyl]-2-pyridine carboxylic acid (HBAP), and the corresponding lanthanide complexes, tris(6-[(benzylamino) carbonyl]- 2-pyridine carboxylato) lanthanide(III) (Ln-BAP, Ln=Eu, Tb, Gd), have been designed and synthesized. The lanthanide (Eu(III), Tb(III)) complexes were efficiently sensitized by BAP ligand. The fluorescence quantum yields were investigated by comparison with a luminescence standard, and the yields were 15 ± 3%, 34 ± 3% for the solid europium and terbium complexes respectively. The lowest triplet level of HBAP ligand was calculated from the phosphorescence spectrum of Gd-BAP complex, and the energy transfer mechanisms in the lanthanide complexes were discussed.
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