Abstract: Three N,N-bidentate ligands, 5,5′-dibromo-2,2′-bipyridine (L2) and two carbazole containing ligands of 5-bromo-5′-carbazolyl-2,2′-bipyridine (L3), 5,5′-dicarbazolyl-2,2′-bipyridine (L4) have been successfully synthesized based on 2,2′-bipyridine (L1). Employing dibenzoylmethane (DBM) and L1-L4 as the sensitizing ligands, a series of europium(Ⅲ) complexes (Eu(DBM)3L1-Eu(DBM)3L4) have been obtained. All the europium(Ⅲ) complexes show bright red characteristic emission of Eu(Ⅲ) 5D0-7FJ (J=0, 1, 2, 3, 4) under the excitation wavelength at 387 nm. The introduction of carbazole moieties improves the UV-Vis absorption and luminescence intensities of the europium(Ⅲ) complexes. |
朱玉成,李红岩,徐秋蕾,陶云梅,王 栋,郑佑轩,左景林.含咔唑基团联吡啶衍生物为中性配体的铕配合物的合成和发光性质研究[J].无机化学学报,2011,27(8):1491-1496. |