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Updated: May 20, 2025
Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
Published on: May 12, 2023
A uranyl-based metal-organic framework featuring an eight-connected U4L2 cage for guest capture
Shuang Deng1,2, Zhi-Wei Huang2, Xuan Fu2
1State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, Guangxi, China. wangnannan@gxu.edu.cn.
Abstract:
A novel (3,6)-connected uranyl-based MOF (IHEP-50) was synthesized by a judicious combination of UO22+ and polycarboxylic acid, 4,4',4'',4''',4'''',4'''''-(((1,3,5-triazine-2,4,6-triyl)tris(azanetriyl))hexakis(methylene))hexabenzoic acid (H6DTPCA). Two DTPCA6- ligands are connected together via four uranyl cations to form a lantern-shaped cage U4L2, which is further connected with other eight equivalent ones to form a 3D porous framework with two kinds of 1D channels. These large pore structures give it certain potential for guest molecule capture. Adsorption experiments indicate that IHEP-50 can selectively remove positively charged dyes over negatively charged and neutral ones. In addition, IHEP-50 demonstrates notable adsorption performance for gaseous iodine, achieving a maximum adsorption capacity of 253.5 mg g-1.
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