Near-infrared emission from novel Tris(8-hydroxyquinolinate)lanthanide(III) complexes-functionalized mesoporous SBA-15.
Near-infrared emission from novel Tris(8-hydroxyquinolinate)lanthanide(III) complexes-functionalized mesoporous SBA-15.
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DOI：
10.1021/la7036108
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发表时间：
2008-04
期刊：
影响因子：
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通讯作者：
Lining Sun;Hong‐Jie Zhang;Jiangbo Yu;Shiyong Yu;Chunyun Peng;Song Dang;Xianmin Guo;Jing Feng
中科院分区：
文献类型：
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作者：
Lining Sun;Hong‐Jie Zhang;Jiangbo Yu;Shiyong Yu;Chunyun Peng;Song Dang;Xianmin Guo;Jing Feng
合成了一种新型的8-羟基喹啉（HQ）键合介孔材料（Q-SBA-15）。将5-甲酰基-8-羟基喹啉接枝到（3-氨丙基）三乙氧基硅烷上，即烷氧基硅烷改性的8-羟基喹啉（Q-Si），用作制备Q-SBA-15材料的前体之一。基于Q-Si与稀土离子配位的另一功能，首次将稀土配合物LnQ 3（Ln = Er，Nd，Yb）共价键合到SBA-15材料上。采用场发射扫描电子显微镜（FE-SEM）、X射线粉末衍射（XRD）、透射电子显微镜（TEM）、氮吸附-脱附和荧光光谱等手段对合成的LnQ 3-SBA-15进行了表征。当在配体吸收带处激发时，所有这些材料通过从配体到镧系离子的分子内能量转移显示出相应镧系离子的特征近红外（NIR）发光。并与相应的纯LnQ 3配合物的近红外发光进行了比较和讨论。
A novel mesoporous material covalently bonded with 8-hydroxyquinoline (HQ) was synthesized (designated as Q-SBA-15). The 5-formyl-8-hydroxyquinoline grafted to (3-aminopropyl)triethoxysilane, that is, alkoxysilane modified 8-hydroxyquinoline (Q-Si), was used as one of the precursors for the preparation of the Q-SBA-15 material. On the basis of the other function of the Q-Si of coordinating to lanthanide (Ln) ions, for the first time, the LnQ 3 complexes (Ln = Er, Nd, Yb) have been covalently bonded to the SBA-15 materials. The derivative materials, denoted as LnQ 3-SBA-15, were characterized by field emission scanning electron microscopy (FE-SEM), powder X-ray diffraction (XRD), transmission electron microscopy (TEM), nitrogen adsorption-desorption, and fluorescence spectra. Upon excitation at the ligands absorption bands, all of these materials show the characteristic near-infrared (NIR) luminescence of the corresponding lanthanide ions through the intramolecular energy transfer from the ligands to the lanthanide ions. The NIR luminescence of these mesoporous materials was compared with that of the corresponding pure LnQ 3 complexes and discussed in detail.