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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Properties of molecular lanthanide crystals spectra in the near-IR region
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Properties of molecular lanthanide crystals spectra in the near-IR region

机译：近红外区分子镧系元素晶体光谱的性质

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摘要

Electronic absorption spectra of isomorphic Gd~(3+), Tb~(3+) and Yb~(3+) acetate crystals with the [Ln_2(CH_3COO)_6(H_2O)_4] formula were measured in the 800-2700 nm range at room temperature. For comparison purposes crystal spectra of the [Y_2(CH_3COO)_6(H_2O)_4] centre dot 4H_2O and Na_3[Yb(dpa)_3] centre dot 13H_2O (dpa = 2,6-pyridinedicarboxylate) were also recorded. IR spectra and a luminescence spectrum of the Tb~(3+) acetate crystal were taken as well. The analysis of the IR and near-IR (NIR) spectra of the crystals has shown that the f-f transitions in the NIR range can be dominated by overtone vibrations of ligands.
机译：在800-2700 nm范围内测量了具有[Ln_2（CH_3COO）_6（H_2O）_4]公式的同构Gd〜（3 +），Tb〜（3+）和Yb〜（3+）醋酸盐晶体的电子吸收光谱在室温下。为了比较，还记录了[Y_2（CH_3COO）_6（H_2O）_4]中心点4H_2O和Na_3 [Yb（dpa）_3]中心点13H_2O（dpa = 2,6-吡啶二羧酸酯）的晶体光谱。还获得了乙酸Tb〜（3+）晶体的红外光谱和发光光谱。晶体的IR和近红外（NIR）光谱分析表明，在NIR范围内的f-f跃迁可以由配体的泛音振动控制。

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