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Updated: Feb 20, 2026

Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange
Published on: June 23, 2023
The mixed-ligand strategy to assemble a microporous anionic metal-organic framework: Ln3+ post-functionalization,
Mingming Guo1, Sixu Liu, Huadong Guo
1Department of Chemistry, Changchun Normal University, Changchun, 130032, P. R. China. hdxmguo@163.com xian_min@hotmail.com.
Abstract:
A unique microporous anionic metal-organic framework, namely [Zn2(btb)2(bbis)](Me2NH2)2·6DMF (1), has been synthesized and structurally characterized [bbis = bis(4-benzylimidazol-ylphenyl)sulfone and H3btb = 4,4',4''-benzene-1,3,5-triyltribenzoic acid]. This compound exhibits a 4-fold interpenetrated anionic framework with ins topology. The post-synthetic cation exchange of 1 with Eu3+, Tb3+, Dy3+ and Sm3+ afforded lanthanide(iii)-loaded materials. Eu3+@1 and Tb3+@1 can be used as the potential luminescent probes in nitrobenzene. The adsorption behavior of 1 towards organic dyes was investigated, revealing rapid and selective separation of methylene blue.
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