Luminescent lanthanide complexes with phosphoramide and arylphosphonic diamide ligands
作者:Marco Bortoluzzi、Alberto Gobbo、Alberto Palù、Francesco Enrichi、Alberto Vomiero
DOI:10.1007/s11696-019-00799-6
日期:2020.11
transitions of the metal centre, with the exception of the carbazolyl derivative. Some of the ligands were also able to sensitize Tb(III) luminescence, in agreement with the triplet state energies estimated from the phosphorescence spectra of the analogous Gd(III) nitrates. On the basis of the photoluminescence results achieved using nitrate as ancillary ligand, heptacoordinate Eu(III) complexes having general
磷酰胺和芳基膦酸二酰胺配体OP(NMe 2)2 Ind,OP(NMe 2)2 Cbz,OP(NMe 2)2 Ph,OP(NMe 2)2(1-Naph)对Eu(III)发光的敏化和OP(NMe 2)2(2-Naph)(Ind =吲哚-1-基; Ph =苯基; Cbz =咔唑-9-基; 1-Naph =萘-1-基; 2-Naph =萘-2 -Eyl)通过与[Eu(NO 3)3 ]金属片段配位而得到验证。相应配合物的发射光谱仅显示5 D 0 → 7 F J除咔唑基衍生物外,金属中心的过渡。一些配体还能够敏化Tb(III)发光,这与从类似的硝酸Gd(III)的磷光光谱估计的三重态能量一致。基于使用硝酸盐作为辅助配体获得的光致发光结果,具有通式[Eu(β-dike)3 L]的七配位Eu(III)配合物(β-dike=二苯甲酰甲烷酸酯,丁酰基三氟丙酮酸酯; L =磷酰胺或芳基磷酸二酰胺配体)被准备