| MCM-41与不同配体-Tb3+组装体的性能研究 |
| Properties of Assembly Body of Tb3+ and Ligands in Mesoporous MCM-41 |
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| 摘要: 在氨水体系中制备了MCM-41-水杨酸、MCM-41-水杨酸-Tb3+、MCM-41-水杨酸-邻菲咯啉-Tb3+，并通过XRD、IR、激发与发射光谱等技术对其进行了表征。在氨水和室温条件下就可获得规整有序、结晶度高、稳定性好的组装体样品。MCM-41-水杨酸体系中，水杨酸掺杂浓度为0.025 g时发光最强。在MCM-41-水杨酸-Tb3+体系中，低强度激发下，Tb3+自身并不发光，但对水杨酸起到敏化作用，随Tb |
| 关键词: MCM-41 水杨酸 Tb3+ 邻菲咯啉 发光 |
| 基金项目: |
| Abstract: MCM-41-salicylic acid, MCM-41-salicylic acid-Tb3+ and MCM-41-salicylic acid-phen-Tb3+ were prepared in the ammonia system. The structure and properties were characterized by XRD, IR, excitation and emission spectroscopy. The samples synthesized in ammonia medium at room temperature possessed ordered structure, highly crystallinity and good stability. Salicylic acid was the most luminous at doping concentration of 0.025 g. In low-intensity excitation, Tb3+ was not luminous itself, but it promoted the sensitivity to salicylic acid. High-energy excitation increased the excited state density of salicylic acid and Tb3+ ion. Both at lower temperature(7 K) and higher temperature(300 K), luminescence of Tb3+ 5D3→7F5，5D4→7F6，5D4→7F4 were all observed. The surface lattice field of MCM-41 impacted the energy level of single state and three states of salicylic acid and o-phenanthroline. The efficiency of energy transfer from the second ligand o-phenanthroline to Tb3+ increased, and luminous intensity of Tb3+ enhanced. |
| Keywords: MCM-41 salicylic acid Tb3+ o-phenanthroline luminescence |
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| 周 彬,魏长平,彭春佳.MCM-41与不同配体-Tb3+组装体的性能研究[J].无机化学学报,2009,25(3):506-511. |
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