论文部分内容阅读
本文合成了苯甲酰三氟乙酰丙酮(简称L)和三苯基氧化膦(TPPO)、联吡啶(Bipy)、邻菲罗林(Phen)。四甲基氢氧化铵(NMe_4OH)与Eu、Tb、Sm、Dy的三合型和四合型共十六种配合物,常温下研究了它们的固体粉末荧光光谱,发现四种铕配合物中Eu~(3+)的~5D_0—~7F_2跃迁最强,而且EuL_3Bipy和EuL_3(TPPO)_2发光相对强度特别高,其余三种离子的特征跃迁能级:Tb~(3+)是~3D_4—~7F_5,Sm~(3+)是~4G_(5/2)—~6H_(3/2),Dy~(3+)是~4F_(9/2)—~6H_(1/2),除TbL_3(TPPO)_2外,其余发光强度不大.发现四合型NMe_4EuL_4在非极性溶剂中荧光强度最大,表明其稳定性高.在PS树脂中添加微量EuL_3Bipy或EuL_3(TPPO)_2,在～365nm光照射下显示鲜艳的红色荧光.
Benzoyl trifluoroacetylacetonate (abbreviated as L) and triphenylphosphine oxide (TPPO), bipyridine (Bipy) and phenanthroline were synthesized in this paper. A total of 16 complexes of tetramethylammonium hydroxide (NMe_4OH) with Eu, Tb, Sm, Dy were synthesized and their solid powder fluorescence spectra were studied at room temperature. It was found that among four europium complexes Eu ~ (3+) ~ 5D_0 ~ ~ 7F_2 is the strongest, and EuL_3Bipy and EuL_3 (TPPO) _2 have the highest relative luminescence intensity. The other three transition states are Tb ~ (3+) ~ 3D_4- ~ 3F and ~ 4F_ (9/2) ~ ~ 6H_ (1/2) for Sm ~ (3+) ~ 7F_5 and ~ TbL_3 (TPPO) _2, the rest of the luminescence intensity is not large.It was found that the fluorescence intensity of the quadruplex NMe_4EuL_4 in nonpolar solvent was the highest, which indicated that its stability was high.A small amount of EuL_3Bipy or EuL_3 (TPPO) _2 was added to PS resin, 365nm light shows bright red fluorescence.