CO2-selective molecular recognition in UiO-66 via post-synthetic polyethylene glycol/amidoxime functionalization

Tao Hong; Mengdan Ma; Yu Li; Shujuan Wang; Anning Zhou; Xinli Jing

doi:10.1039/D5CC01623A

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CO₂-selective molecular recognition in UiO-66 via post-synthetic polyethylene glycol/amidoxime functionalization†

Tao Hong,

^a Mengdan Ma,^ab Yu Li,

^a Shujuan Wang,^a Anning Zhou^b and Xinli Jing

*^a

Author affiliations

* Corresponding authors

^a School of Chemistry, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P. R. China
E-mail: xljing@mail.xjtu.edu.cn

^b School of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi 710054, P. R. China

Abstract

A diisocyanate-bridged polyethylene glycol modification and time-controlled amidoximation strategies are developed to engineer UiO-66 metal–organic frameworks (MOFs), achieving 115.3% and 130.0% CO₂/N₂ adsorption selectivity enhancements via escalated CO₂–MOF interactions. This universal approach could be accommodated in diverse MOF systems for tailored carbon capture and separation applications.

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Article information

DOI: https://doi.org/10.1039/D5CC01623A
Article type: Communication
Submitted: 22 Mar 2025
Accepted: 02 Jun 2025
First published: 03 Jun 2025

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Chem. Commun., 2025, Advance Article

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CO₂-selective molecular recognition in UiO-66 via post-synthetic polyethylene glycol/amidoxime functionalization

T. Hong, M. Ma, Y. Li, S. Wang, A. Zhou and X. Jing, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC01623A

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