| 引用本文: | 綦尤训,周家茵,周世光.镧系配合物热致色变性能的研究(Ⅰ).[J].国防科技大学学报,1987,(3):52-57.[点击复制] |
| Qi Youxun,Zhou Jiayin,Zhou Shiguang.Studies on Thermochromic Properties of the Lanthanide Chelates (Ⅰ)[J].Journal of National University of Defense Technology,1987,(3):52-57[点击复制] |
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| 镧系配合物热致色变性能的研究(Ⅰ) |
| 綦尤训, 周家茵, 周世光 |
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(应用化学系)
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| 摘要: |
| 本文用紫外—可见吸收光谱研究了镧系金属(Ln)与二甲酚橙(XO)生成的配合物水溶液可逆热致色变规律，提出了变色因子 Fc=|⊿A1十⊿A2|，并用Fc值初步探讨了Ln(Ⅲ)—XO体系热致色变程度与镧系元素原子序、三价金属离子半径及Ln(Ⅲ)f电子数之间的关系，揭示了其间分别存在的“双 W 型”效应。说明镧系金属离子(Ⅲ)电子构型也是影响 Ln(Ⅲ)—XO 配合物热致色变作用的一个重要因素。 |
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| 投稿日期：1987-04-16 |
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| Studies on Thermochromic Properties of the Lanthanide Chelates (Ⅰ) |
| Qi Youxun, Zhou Jiayin, Zhou Shiguang |
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(The application of chemistry)
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| Abstract: |
| Reversible thermochromisms in the aqueous solutions of the lanthanide chelates with xylenol orange have been investigated by visual observation and spectro-photometry at pH 4.0. The color change factor Fc，defined as Fc=|⊿A1十⊿A2|，
is suggested for characterizing the thermochromic extent of the chelates.
The relations of the Fc value with the number of lanthanide elements，the ionic radii and the number of 4f-electron of the Ln(Ⅲ)-ions，which shows remarkable "double W" effect，have been studied and explained by"hole theory". |
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