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Updated: Feb 5, 2026

Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Functionalized polyoxometalate-based metal-organic cuboctahedra for selective adsorption toward cationic dyes in
Ya-Ru Gong1, Wei-Chao Chen, Liang Zhao
1Institute of Functional Material Chemistry, Local United Engineering Lab for Power Batteries, Northeast Normal University, Changchun, 130024 Jilin, People's Republic of China. wangxl824@nenu.edu.cn.
Abstract:
Two functionalized polyoxovanadate-based metal-organic polyhedra with heterocube formations are synthesized under solvothermal conditions. The structures of VMOP-18 and VMOP-19 display similar cuboctahedral geometries when the polyoxovanadate {V6O6(OCH3)9X(COO)3}n- (X = VO4, n = 1; SO4, n = 2) building units and organic ligands are considered as triangular faces of the polyhedra. Each cuboctahedron was surrounded by eight neighbouring cuboctahedra via strong C-Hπ interactions, leading to a 3D open supramolecular structure. Furthermore, the absorption ability toward the ionic dyes of VMOP-18 was investigated. Only cationic dyes can be absorbed into the cavity of VMOP-18, which indicates that the cationic dye absorption process is an ion-exchange process.
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