华中师范大学涂斌斌团队报道了通过序列控制合成具有可变骨架的柱状层状金属有机框架。相关研究成果于2025年1月20日发表于国际一流学术期刊《自然—化学》。

金属-有机框架（MOFs）的性质和功能可以通过调整其结构来定制，包括其形状、孔隙率和拓扑结构。然而，以可预测的方式设计和合成复杂结构仍然具有挑战性。

该文中，研究人员报告了一系列异构柱层状MOFs的制备，并表明可以通过改变层堆叠来控制它们的三维拓扑结构。这使得骨架结构具有可变性，以及柱体的不同空间排列，并将孔隙空间划分为以不同顺序排列的几种笼状物。

这些顺序控制的MOFs（SC-MOF-1-6）在低压和高压甲烷储存中的，高体积和重量吸收性能下显示出超高的苯捕获能力。研究人员提供了SC-MOFs的构造原理，并使用Python脚本在原子级别预测了，近2000个具有复杂组合序列的可能SC网络。

附：英文原文

Title: Synthesis of pillar-layered metal–organic frameworks with variable backbones through sequence control

Author: Yuan, Jingjing, Yang, Ming, Yang, Bin, Chen, Shuting, Liu, Zhiqiang, Pang, Qingqing, Wan, Mingyu, Zheng, Anmin, Tu, Binbin

Issue&Volume: 2025-01-20

Abstract: The properties and functions of metal–organic frameworks (MOFs) can be tailored by tuning their structure, including their shape, porosity and topology. However, the design and synthesis of complex structures in a predictable manner remains challenging. Here we report the preparation of a series of isomeric pillar-layered MOFs, and we show that their three-dimensional topology can be controlled by altering the layer stacking. This enables variability on the backbone structure, as well as diverse spatial arrangements of pillars and the partitioning of pore space into several kinds of cages packing in distinct sequences. These sequence-controlled MOFs (SC-MOF-1–6) showcase ultrahigh benzene capture capacities at low-pressure and high volumetric and gravimetric uptake performances in high-pressure methane storage. We provide the construction principles of the SC-MOFs and predict nearly 2,000 possible SC-networks with sophisticated composition sequences at the atomic level by using a Python script.

DOI: 10.1038/s41557-024-01717-4

Source: https://www.nature.com/articles/s41557-024-01717-4