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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >A multifunctional MOF as a recyclable catalyst for the fixation of CO2 with aziridines or epoxides and as a luminescent probe of Cr(VI)
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A multifunctional MOF as a recyclable catalyst for the fixation of CO2 with aziridines or epoxides and as a luminescent probe of Cr(VI)

机译：作为用于固定CO 2的可再循环催化剂的多功能MOF，用氮化物或环氧化物固定，作为Cr（VI）的发光探针

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摘要

A multifunctional metal-organic framework (1) containing 24-nuclear zinc nanocages shows high solvent- and pH-stability. Compound 1 can be employed as a catalyst for the conversion of CO2 with aziridines or epoxides, which can be reused at least ten times just by a simple and rapid method. The PXRD of compound 1 after ten recyclings remains well consistent with the original one. The inductively coupled plasma measurement of a reaction filtrate revealed that only trace amount leakage of Zn2+ was observed, indicating that the framework did not collapse after recyclings. Compound 1 can effectively catalyze the cycloaddition reaction of CO2 and five aziridines or five epoxides with different substituent groups. To our knowledge, this is the first multifunctional MOF-based catalyst used for the conversion of CO2 with aziridines or epoxides. Furthermore, luminescence investigations reveal that compound 1 can also act as a luminescent probe for chromium(vi) anion species, which is seriously harmful to humans and the environment. After five cycle tests, the PXRD of compound 1 is still in accordance with the original one, indicating that compound 1 can serve as a circulatory luminescent probe for Cr(vi) anions.
机译：含有24核锌纳米病的多功能金属 - 有机骨架（1）显示出高溶剂和pH稳定性。化合物1可以用作转化CO 2的催化剂与氮啶或环氧化物，其可以通过简单且快速的方法重复至少十倍。十个回收后的化合物1的PXRD仍然与原始持续良好。反应滤液的电感耦合等离子体测量显示，观察到仅观察到XN2 +的痕量泄漏，表明框架在再循环后没有塌陷。化合物1可以有效地催化CO 2和五种氮铁啶的环加成反应或用不同的取代基的环氧化物。据我们所知，这是第一种用于转化二氧化氮或环氧化物的CO 2的基于多功能MOF的催化剂。此外，发光研究表明，化合物1还可以作为铬（VI）阴离子物种的发光探针，这对人类和环境具有严重危害。在五个循环试验之后，化合物1的PXRD仍然依照原来的PXRD，表明化合物1可以用作Cr（VI）阴离子的循环发光探针。

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