Near-infrared luminescent hybrid materials doped with lanthanide (Ln) complexes (Ln = Nd, Yb) and their possible laser application.
Near-infrared luminescent hybrid materials doped with lanthanide (Ln) complexes (Ln = Nd, Yb) and their possible laser application.
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DOI：
10.1021/jp044591h
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发表时间：
2005-03
期刊：
影响因子：
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通讯作者：
Lining Sun;Hong‐Jie Zhang;Q. Meng;Feng-yi Liu;L. Fu;Chunyun Peng;Jiangbo Yu;G. Zheng;Shu-bin Wan
中科院分区：
文献类型：
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作者：
Lining Sun;Hong‐Jie Zhang;Q. Meng;Feng-yi Liu;L. Fu;Chunyun Peng;Jiangbo Yu;G. Zheng;Shu-bin Wan
报道了三元 Ln(DBM)(3)phen 配合物（DBM = 二苯甲酰甲烷，phen = 1,10-菲咯啉，Ln = Nd, Yb）的晶体结构及其通过溶胶-凝胶过程的原位合成。研究了通过原位方法获得的Ln(DBM)(3)phen配合物及其相应的Ln(3+)/DBM/phen共掺杂发光杂化凝胶(Ln-D-P凝胶)的性质。结果表明，在相应的 Ln-D-P 凝胶中成功地原位合成了镧系元素配合物。 Ln(DBM)(3)phen 配合物和 Ln-D-P 凝胶在配体最大吸收激发时显示出敏化近红外 (NIR) 发光，这有助于从配体到 Ln(3+) 离子 (Ln = Nd, Yb) 的有效能量转移，即天线效应。采用Judd-Ofelt分析讨论了Nd-D-P凝胶中Nd(3+)离子的辐射特性，表明Nd-D-P凝胶中Nd(3+)离子的(4)F(3/2)→(4)I(11/2)跃迁可以被视为可能的激光跃迁。
The crystal structures of ternary Ln(DBM)(3)phen complexes (DBM = dibenzoylmethane, phen = 1,10-phenanthroline, and Ln = Nd, Yb) and their in situ syntheses via the sol-gel process are reported. The properties of the Ln(DBM)(3)phen complexes and their corresponding Ln(3+)/DBM/phen-co-doped luminescent hybrid gels obtained via an in situ method (Ln-D-P gel) have been studied. The results reveal that the lanthanide complexes are successfully in situ synthesized in the corresponding Ln-D-P gels. Both Ln(DBM)(3)phen complexes and Ln-D-P gels display sensitized near-infrared (NIR) luminescence upon excitation at the maximum absorption of the ligands, which contributes to the efficient energy transfer from the ligands to the Ln(3+) ions (Ln = Nd, Yb), an antenna effect. The radiative properties of the Nd(3+) ion in a Nd-D-P gel are discussed using Judd-Ofelt analysis, which indicates that the (4)F(3/2) --> (4)I(11/2) transition of the Nd(3+) ion in the Nd-D-P gel can be considered as a possible laser transition.