Synthesis and luminescence of a novel conjugated europium complex with 6-paramethylaniline carbonyl 2-pyridine carboxylate

• Published in: Journal of alloys and compounds 2003-03, Vol.352 (1), p.143-147
• Main Authors: An, Bao-li, Cheah, Kok-wai, Wong, Wai-kwok, Shi, Jian-xin, Xu, Ning-sheng, Yang, Yan-sheng, Gong, Meng-lian
• Format: Article
• Language: English
• Subjects: Absorption spectra; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electroluminescence; Europium organic complex; Exact sciences and technology; Lifetime; Luminescence; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Other luminescence and radiative recombination; Photoluminescence; Physics; Solid organic materials; Time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/S0925-8388(02)01118-0

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) (Eu-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 5D 0 of Eu 3+ in the complex were examined using time-resolved spectroscopic analysis; the lifetime values were 0.72±0.01 ms for 1.0×10 −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.