Synthesis and luminescence of a novel conjugated europium complex with 6-paramethylaniline carbonyl 2-pyridine carboxylate
摘要:
A novel organic ligand, 6-paramethylaniline carbonyl 2-pyridine carboxylic acid (Hp-MAP), and the corresponding europium complex, tris(6-paramethylaniline carbonyl 2-pyridine carboxylato) europium(III) (Ealpha-p-MAP) have been designed and synthesized. The results showed that Eu-p-MAP was a conjugated complex, emitting remarkably strong red luminescence. The lifetimes of D-5(O) of Eu3+ in the complex were examined using time-resolved spectroscopic analysis; the lifetime values were 0.72+/-0.01 ms for 1.0 X 10(-5) mol l(-1) Eu(p-MAP)(3) ethanol solution and 1.16+/-0.01 ms for solid of Eu(p-MAP)(3), respectively. Thermogravimetric analysis showed the europium complex had good thermal stability. (C) 2002 Elsevier Science B.V. All rights reserved.