崩还是被捕? 两种结构上不同的柱状MOF在暴露于化物和化物时的客体诱导反应
Dario Giovanardi1, Giorgio Cagossi1, Pavel N Zolotarev2
1Department of Chemical Science, Life Science and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy. paolo.pelagatti@unipr.it.
两种含有Zn的金属有机框架 (MOF) 对类和类有不同的反应. PUM168和PUM210框架与二烯降解,但二烯吸附不同,揭示了MOF稳定性和客体相互作用的洞察力.
科学领域:
- 材料科学
- 协调化学
- 晶体学
背景情况:
- 金属有机框架 (MOF) 为各种应用提供可调节的结构.
- 了解MOF与客分子的相互作用对于其设计和使用至关重要.
- 有Zn中心的柱状MOF具有独特的结构和化学特性.
研究的目的:
- 研究两种不同的基于Zn的柱状MOF (PUM168和PUM210) 对类和类的吸附行为.
- 在客分子相互作用时描述这些MOF的结构变化和降解途径.
- 探索MOF在选择性客体吸收和化学转化方面的潜力.
主要方法:
- 单晶X射线衍射用于MOF及其客体的结构分析.
- 单晶转化为单晶,以监测结构变化.
- 化学分析和分解产品的结构特征.
主要成果:
- 无论是PUM168还是PUM210,都显示出大量的素吸收,只有PUM168的结构建模才成功.
- PUM168和PUM210晶体在暴露于液体皮里丁时迅速降解.
- 在中降解PUM210涉及到支柱的替换,形成新的1D协调聚合物.
- 在PUM168中与8-基诺林诱导的链子质解和Zn离子提取的相互作用.
结论:
- 与刚性多链PUM210相比,PUM168的结构灵活性和相互透性促进了更好的客分子建模.
- 研究的柱状MOF容易被液体化物降解,这凸显了它们的化学稳定性的局限性.
- 观察到的降解途径为MOF的反应性和合成后修饰或分解的潜力提供了宝贵的见解.
- 展现了选择性客户接纳和框架转型,强调了MOF的动态性质.
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