Photofunctional Eu3+/Tb3+ hybrids through sulfoxide linkages: coordination bonds construction, characterization and luminescence.
Photofunctional Eu3+/Tb3+ hybrids through sulfoxide linkages: coordination bonds construction, characterization and luminescence.
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DOI：
10.1039/c0dt01793k
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发表时间：
2011-04
影响因子：
4
通讯作者：
Lei Guo;B. Yan;Jin-Liang Liu
中科院分区：
文献类型：
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作者：
Lei Guo;B. Yan;Jin-Liang Liu
通过溶胶-凝胶法获得了由稀土（Eu（3+）、Tb（3+））配合物与二氧化硅基网络共价键合组成的新型有机-无机杂化材料。通过亚甲基修饰反应合成了三种新型的多功能含亚砜有机单元的分子结构单元，它们既可作为稀土离子的配体，又可作为硅氧烷网络的前体。通过红外光谱、紫外光谱、X射线衍射、扫描电镜等分析手段对所得杂化材料进行了表征。对所制备的杂化物进行光致发光测量，显示在可见光（Eu（3+），Tb（3+））区域内的4f（n）发射，并且在所有情况下被亚砜配体敏化。并对Eu（3+）杂化材料的发光量子效率和Judd-Ofelt强度参数进行了详细的研究。
New kinds of organic-inorganic hybrid materials consisting of rare earth (Eu(3+), Tb(3+)) complexes covalently bonded to a silica-based network have been obtained by a sol-gel approach. Three novel versatile molecular building blocks containing sulfoxide organic units have been synthesized by methylene modification reaction, which are used as the ligands of rare earth ions and also as siloxane network precursors. The obtained hybrids are characterized by chemical analysis and spectroscopic methods such as FTIR and UV; XRD and SEM. Photoluminescence measurements on the prepared hybrids were performed showing the intra-4f(n) emission in the visible (Eu(3+), Tb(3+)) region and in all the cases being sensitized by the sulfoxide ligands. The emission quantum efficiency and the Judd-Ofelt intensity parameters of Eu(3+) hybrid materials were also investigated in detail.