采用溶胶-凝胶法,制备了Ln(Bipy)2Cl3·2H2O (Ln3+: Eu3+,Er3+;Bipy:2,2'-联吡啶)配合物掺杂的二氧化硅凝胶样品.首次采用光声光谱分析了配合物在凝胶中的形成.对于仅经室温陈化、干燥的两种配合物掺杂的湿凝胶样品,在配体吸收处光声强度相同;而经120℃热处理后的凝胶样品在配体吸收处的光声强度有明显差别.结合荧光和红外光谱的结果表明,未经适当的热处理过程,凝胶样品中稀土配合物尚不能形成.进一步据光声谱计算了凝胶样品中铒离子的电子云重叠参数和光声支量值,分析了稀土离子的配位环境和成键性质变化.
参考文献
| [1] | 孙丽宁,符连社,刘丰祎,彭春耘,郭俊芳,张洪杰.无机/有机稀土配合物杂化发光材料研究进展[J].发光学报,2005(01):15-26. |
| [2] | Lenaerts P;Gorller-Walrand C;Binnemans K .Luminescent europium(III) and terbium(III) nicotinate complexes covalently linked to a 1,10-phenanthroline functionalised sol-gel glass[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2006(2):163-169. |
| [3] | Yang YT.;Zhao GW.;Zhang SY. .Photoacoustic spectral studies on lanthanide amino acid complexes[J].Review of Scientific Instruments,2003(1):309-311. |
| [4] | 杨跃涛,苏庆德,赵贵文,张淑仪.Study on F-F Transitions of Powdered Neodymium |
| [5] | 苏庆德.CeO2纳米薄膜的光声光谱研究[J].稀土,1998(01):57. |
| [6] | Adams M J;Highfield J G;Kirkbright G F .Determination of the absolute quantum efficiency of luminescence of solid materials employing photoacoustic spectroscopy[J].Analytical Chemistry,1980,52:1260-1264. |
| [7] | 杨维东,王艇,雷衡毅,刘洁生,杨燕生.稀土生物效应研究进展[J].稀土,2000(03):62-70. |
| [8] | 张若桦.稀土元素化学[M].天津:天津科学技术出版社,1987:44-54. |
| [9] | Jorgensen C K .Reflection spectra of lanthanides in thorium (Ⅲ) oxide and the large nephelauxetic effect of oxide ligands or vacancies[J].Stuct Bonding,1996,1:3-9. |
| [10] | Levy D;Reisfeld R;Avnir D .Fluorescence of europium trapped in silica gel glass as a probe for cation binding and for changes in cage symmetry during gel dehydration[J].Chemical Physics Letters,1984,109(06):593-597. |
| [11] | Strek W;Lukowaik E;Marchewak M et al.Photoacoustic spectra of rare earth pentaphosphates[J].Applied Spectroscopy,1987,41(04):693-695. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%