Abstract

The spectral-luminescent properties of europium(III) complexes with o-methoxybenzoic acid and phosphorus-containing neutral ligands with an island structure and the compositions Eu(MOBA)₃ · 3H₂O and Eu(MOBA)₃ · L, where MOBA is o-methoxybenzoic acid and L is hmpa (hexamethylphosphortriamide, tppo (triphenylphosphinoxide), and Et₆pa (hexaethylphosphortriamide), are studied. It is found that the excitation energy transfer to the europium ion occurs from the levels of both o-methoxybenzoic acid and phosphorus-containing neutral ligands. The electronic absorption and luminescence excitation spectra, as well as the Stark structure of the ⁵D₀−⁷F_j ( j = 0–2) electronic transitions in the luminescence spectra of mixed-ligand complexes of europium(III) o-methoxybenzoates, are analyzed. The highest luminescence intensity is demonstrated by europium(III) methoxybenzoate with triphenylphosphinoxide.

中文翻译：

---

杂配Euro与邻甲氧基苯甲酸和含磷中性配体的配合物的光谱发光性质

摘要

o与邻甲氧基苯甲酸和具有岛结构的含磷中性配体以及Eu（MOBA）₃ ·3H ₂ O和Eu（MOBA）₃ ·L组成的配合物的光谱发光性质，其中MOBA为研究了邻甲氧基苯甲酸和L为hmpa（六甲基磷三酰胺，tppo（三苯基次膦氧化物）和Et ₆ pa（六乙基磷三酰胺），发现向energy离子的激发能转移是由邻甲氧基苯甲酸和含磷的中性配体。电子吸收和发光激发光谱以及⁵的斯塔克结构分析了o（III）邻甲氧基苯甲酸酯的混合配体配合物的发光光谱中的D ₀ − ⁷ F _j（  j = 0–2）电子跃迁。甲氧基苯甲酸euro（III）与三苯基氧化膦证明了最高的发光强度。