Effect of 1-(9-Ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione on properties of luminescent europium(lll) complexes

摘要

In order to understand the effect of P-diketone ligands containing carbazole group on luminescent europium(III) complexes, a series of europium(III) complexes (Phen)Eu(DBM)_(3-n)L_n with l-(9-Ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-l,3-dione (L) were synthesized and investigated contrastively (n = 0, 1, 2, 3; DBM: dibenzoylmethane; Phen: 1,10-phenanthroline). The results show amorphous nature, glass transition temperatures and luminescent intensity can be improved obviously by l-(9-ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-l,3-dione, at the same time, their thermal decomposition temperatures have seldom effected by it. The results verify the performance of europium(III) complexes used as luminescent materials can be effectively improved by the β-diketone ligands of this type.