论文部分内容阅读
合成了六种高氯酸掺杂稀土(Dy3+,Tm3+)与二苯甲酰基甲基亚砜的配合物。经元素分析、稀土络合滴定、摩尔电导率及差热-热重分析,表明配合物组成为(Dyx,Tmy)L5(ClO4)3.3H2O(x∶y=1.000∶0.000,0.995∶0.005,0.990∶0.010,0.950∶0.050,0.900∶0.100,0.800∶0.200;L=C6H5COCH2SOCH2COC6H5)。并详细讨论了六种稀土配合物的荧光光谱。从配合物的荧光光谱图可以看出,Tm3+对Dy3+的荧光有增强效应。这可能是因为在惰性稀土离子Tm3+与活性稀土离子Dy3+之间有能量的传递。而且当Dy3+与Tm3+的量比为0.950∶0.050时,掺杂配合物表现出最佳的发光性质。另外,Tm3+对577.4nm处4F9/2→6H13/2峰的荧光敏化作用的程度高于对487nm处4F9/2→6H15/2峰的荧光敏化作用。4F9/2→6H15/2峰的荧光强度增强了212%,而4F9/2→6H13/2峰的荧光强度增强了264%。所以,Dy3+离子的两个特征峰的发射强度比趋近于1,为1.078,使得配合物在紫外灯下发白色荧光。有可能成为一类发白色荧光的发光材料。
Six perchlorate doped rare earth (Dy3 +, Tm3 +) and dibenzoyl methyl sulfoxide complexes were synthesized. The results of elemental analysis, rare earth complexometric titration, molar conductivity and DTA-TG indicate that the complex has the composition of (Dyx, Tmy) L5 (ClO4) 3.3H2O (x: y = 1.000: 0.000, 0.955: 0.005, : 0.010, 0.950: 0.050, 0.900: 0.100, 0.800: 200; L = C6H5COCH2SOCH2COC6H5). The fluorescence spectra of six rare earth complexes were discussed in detail. It can be seen from the fluorescence spectra of the complexes that Tm3 + has an enhancement effect on the fluorescence of Dy3 +. This is probably due to the energy transfer between the inert rare earth ions Tm3 + and the active rare earth ions Dy3 +. And when the molar ratio of Dy3 + to Tm3 + is 0.950: 0.050, the doping complexes show the best luminescent properties. In addition, the fluorescence sensitization effect of Tm3 + on 4F9 / 2 → 6H13 / 2 peak at 577.4 nm was higher than that on 4F9 / 2 → 6H15 / 2 peak at 487 nm. The fluorescence intensity of the 4F9 / 2 → 6H15 / 2 peak increased by 212%, while the fluorescence intensity of the 4F9 / 2 → 6H13 / 2 peak increased by 264%. Therefore, the emission intensity ratio of the two characteristic peaks of Dy3 + ions approached 1, which was 1.078, making the complex fluoresce white under ultraviolet light. It is possible to become a kind of white fluorescent white light emitting material.