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journal article·2025-04Open access

Precise C2H2 Adsorption Affinity Modulation by Nitrogen Functionalization in Isostructural Coordination Networks

Jian‐Wei Cao, Tao Zhang, Yu‐Qi Liu, Yu Wang, Fu‐Ping Pan, Juan Chen, Kai‐Jie Chen

Small· Volume 21· Issue 14
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Abstract

Abstract Meticulous regulation of pore chemistry is essential for elucidating the intricate mechanism of the adsorption efficacy of porous materials. However, it is a great challenge to address the functionalization of pore chemistry while preserving pore size and geometry. In this study, the robust NPU‐1 series network is selected as a platform to address this challenge. By regulating the nitrogen distribution in bilayer‐pyridine ligands, a series of coordination networks (NPU‐1‐TPB/TPP/TPT) with the same pore size and geometry but different pore polarity is obtained, affording an increase in C2H2 enthalpies from −28.3 to −33.1 kJ mol−1. In situ, infrared spectroscopy uncovers the enhanced C2H2 interaction with the central phenyl ring of bilayer‐pyridine ligands with the extent of nitrogen functionalization.
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Research context

OpenAlex topics: Metal-Organic Frameworks: Synthesis and Applications · Covalent Organic Framework Applications · Surface Chemistry and Catalysis

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Affiliations

Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology Xi'an Key Laboratory of Functional Organic Porous Materials School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi'an Shaanxi 710072 China

Chongqing Innovation Center Northwestern Polytechnical University Chongqing Chongqing 401135 China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Natural Science Foundation of Chongqing Municipality

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