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通过金属诱导的动态拓变换的异金属-有机框架

Natalia M Padial¹, Belén Lerma-Berlanga¹, Neyvis Almora-Barrios¹

¹Functional Inorganic Materials Team, Instituto de Ciencia Molecular (ICMol), Universitat de València, Paterna 46980, València, Spain.

Journal of the American Chemical Society

|March 17, 2020

概括

研究人员开发了一种使用金属交换反应制造异金属金属有机框架 (MOF) 的新方法. 这种技术克服了

科学领域:

网络化学和材料科学
多孔材料的合成和特征.
协调化学和固体化学.

背景情况:

网状化学可以设计具有可调的多孔性的多种金属有机框架.
由于的高反应性,合成基于的MOF具有挑战性.
现有的方法限制了分子的控制组装.

研究的目的:

开发一种用于合成异金属-有机框架的新方法.
为了克服控制集群组装的局限性.
探索用于MOF合成的金属交换反应.

主要方法:

在低温下对预制的MUV-10 (Ca) MOF晶体进行金属交换反应.
使用硬 () 和软 () 金属的反应率差异.
使用计算模拟来理解热力学控制和表面效应.

主要成果:

通过金属交换成功合成异金属MOF,产生可变核度的二次结构单元 (SBU).
由SBU形成和热力学控制驱动的MOF转换为MOF.
在温和条件下生产MUV-101 (Fe,Co,Ni,Zn) 和MUV-102 (Cu) MOF,具有已知的框架.
层次性孔隙结构由反应时间控制.

结论:

一个新的低温金属交换策略使异金属MOF的控制合成成为可能.
这种方法使得通过传统的溶热合成无法获得MOF.
这种方法可以精确控制MOF拓和孔径,扩大基材料的范围.

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