Synthesis and photophysical properties of europium pentafluorinated β-diketonate complexes
作者:Yupeng Wan、Heng Lyu、Hengyi Du、Dunjia Wang、Guodong Yin
DOI:10.1007/s11164-018-3691-7
日期:2019.4
(j = 0–4) transitions. The higher values of intensity parameter Ω2 indicated that the europium ion was in a highly polarizable ligand field in these complexes. Europium (III) complexes with the β-diketone PFMP exhibited much better photoluminescence properties than complexes with the β-diketone PFAP. Especially, the europium (III) complex of the β-diketone PFMP with the auxiliary ligand 2,2-dipyridine displayed
两个五氟β-二酮配体,4,4,5,5,5-五氟-1-(4-甲氧基苯基)戊烷-1,3-二酮(PFMP)和4,4,5,5,5-五氟-1 -(4-二甲基氨基-苯基)戊烷-1,3-二酮(PFAP)已用于合成六种具有辅助配体2,2-二吡啶,1,10-菲咯啉和4,7的新型euro(III)配合物-二苯基-1,10-菲咯啉。FTIR,1 H NMR,UV-Vis,发光光谱,元素分析和热重分析对合成的((III)配合物进行了表征。这些配合物的光致发光光谱显示出固态和氯仿溶液中典型的((III)红色发射,分配为5 D 0 → 7 F j(j = 0–4)转换。强度参数的较高值Ω 2表明,铕离子是在这些配合物的高极化配位场。with与β-二酮PFMP的配合物表现出比与β-二酮PFAP配合物更好的光致发光性能。特别是,β-二酮PFMP与辅助配体2,2-二吡啶的complex(III)配合物显示出最长的寿命值