多面体
俘获
化学物理
动能
八面体
超分子化学
化学
动力控制
纳米技术
材料科学
超分子组装
工作(物理)
反应中间体
组合化学
钛
合理设计
结晶学
计算化学
钥匙(锁)
立体化学
水解
过程(计算)
环加成
蓝图
不稳定性
动力学分辨率
金属有机骨架
金属
星团(航天器)
作者
Hui-Zi Li,Chang-Yin Yang,Cheng Gu,Fei Wang,Jian Zhang
标识
DOI:10.1038/s41467-026-69115-7
摘要
The synthesis of high-nuclearity titanium metal-organic polyhedra (Ti-MOPs) has remained a formidable challenge due to the high oxophilicity and hydrolysis susceptibility of Ti4+ ions. Herein, we report a Ti24 MOP with a truncated octahedron (tro) topology, which represents the highest nuclearity Ti-MOP reported to date. Beyond structural characterization, we introduce a pathway intervention strategy using Ni2+ as a kinetic modulator to trap and structurally characterize two key intermediates—a Ti12 macrocycle and a Ti12 (6-4-6) module. These intermediates outline a hierarchical assembly pathway from simple precursors to Ti24 MOP. Furthermore, we demonstrate that this process is governed by a coordination lability gradient between Ti4+ and Ni2+, providing an effective strategy for directing supramolecular complexity. This Ti-MOP exhibits permanent microporosity, gas separation, and post-assembly modification capability. This work transforms a synthetic challenge into a strategic advantage, offering a blueprint for the rational assembly of complex metal-organic architectures. Here authors report the highest nuclearity Ti24 metal-organic polyhedral to date, with a truncated octahedron topology for potential gas separation.
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