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Luminescent Hybrid Materials Based on Laponite Clay

机译：锂皂石粘土基发光复合材料

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摘要

The spectroscopic behavior of ionic Eu~(3+) or Tb~(3+) 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 Eu~(3+) ions in the hybrid material is increased remarkably with respect to the corresponding ionic complex. The hybrid material containing the Eu~(3+) complex shows bright red emission from the prominent ~5D_0→~7F_2 transition of Eu~(3+) ions, and that containing the Tb~(3+) complex exhibits bright green emission due to the dominant ~5D_4→~7F_5 transition of Tb~(3+) ions.
机译：报道了芳香族羧基官能化有机盐的离子Eu〜（3+）或Tb〜（3+）配合物的光谱行为，以及由离子配合物在Laponite粘土上吸附得到的杂化材料的光谱行为。 X射线衍射（XRD）模式表明，络合物主要吸附在Laponite圆盘的外表面上，而不是插在层间空间内。光物理数据表明，杂化材料中从配体到Eu〜（3+）离子的能量转移效率相对于相应的离子配合物明显提高。含Eu〜（3+）配合物的杂化材料从Eu〜（3+）离子的〜5D_0→〜7F_2跃迁突出显示亮红色发射，而含Tb〜（3+）配合物的杂化材料显示出明亮的绿色发射。 Tb〜（3+）离子的〜5D_4→〜7F_5跃迁占主导地位。

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