Luminescent Hybrid Materials Based on Laponite Clay
Luminescent Hybrid Materials Based on Laponite Clay
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基于锂皂石粘土的发光杂化材料
DOI：
10.1002/chem.201402794
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发表时间：
2014-08-11
影响因子：
4.3
通讯作者：
Zhang, Wenjun
中科院分区：
文献类型：
--
作者：
Li, Huanrong;Li, Man;Zhang, Wenjun
本文报道了一种芳香羧基功能化有机盐的Eu3+或Tb3+离子配合物的光谱行为，以及这些离子配合物在拉onite粘土上吸附得到的杂化材料的光谱行为。x射线衍射（XRD）图谱表明，配合物主要吸附在拉脱石圆盘的外表面，而不是嵌入层间空间。光物理数据表明，相对于相应的离子配合物，杂化材料中配体到Eu3+离子的能量转移效率显著提高。含有Eu3+配合物的杂化材料由于Eu3+离子的(D0F2)-D-5-F-7跃迁而发出亮红色，而含有Tb3+配合物的杂化材料由于Tb3+离子的(D4F5)-D-5-F-7跃迁而发出亮绿色。
The spectroscopic behavior of ionic Eu3+ or Tb3+ complexes of an aromatic carboxyl-functionalized organic salt as well as those of the hybrid materials derived from adsorption of the ionic complexes on Laponite clay are reported. X-ray diffraction (XRD) patterns suggest that the complexes are mainly adsorbed on the outer surfaces of the Laponite disks rather than intercalated within the interlayer spaces. Photophysical data showed that the energy-transfer efficiency from the ligand to Eu3+ ions in the hybrid material is increased remarkably with respect to the corresponding ionic complex. The hybrid material containing the Eu3+ complex shows bright red emission from the prominent (D0F2)-D-5-F-7 transition of Eu3+ ions, and that containing the Tb3+ complex exhibits bright green emission due to the dominant (D4F5)-D-5-F-7 transition of Tb3+ ions.