Synthesis and Exfoliation of a New Layered Mesoporous Zr-MOF Comprising Hexa- and Dodecanuclear Clusters as Well as a Small Organic Linker Molecule

A new layered mesoporous
Zr-MOF of composition [Zr30O20(OH)26(OAc)18L18]
was synthesized by employing 5-acetamido­isophthalic acid (H2L) using acetic acid as the solvent. The new MOF, denoted
as CAU-45, exhibits a honeycomb structure of stacked layers which
comprise both hexa- and dodecanucelar zirconium clusters. Its structure
was solved from submicrometer-sized crystals by continuous rotation
electron diffraction (cRED). Liquid phase exfoliation and size selection
were successfully performed on the material.

本研究以乙酸为溶剂，利用5-乙酰胺基间苯二甲酸（H₂L）合成了一种组成式为[Zr30O20(OH)26(OAc)18L18]的新型层状介孔锆基金属有机框架（Zr-MOF）。该新型金属有机框架被命名为CAU-45，其呈现出由堆叠层构筑的蜂窝状结构，堆叠层中同时包含六核与十二核锆团簇。研究人员通过连续旋转电子衍射（cRED）技术，从亚微米级晶体中解析得到了该材料的晶体结构。此外，液相剥离与粒径分选操作在该材料上成功实现。