Thermoresponsive and xenon-triggered gate-opening in flexible three-dimensional covalent organic framework for selective xenon capture.

Yongzheng Wang, Shanshan Wang, Yinhui Li, Shizhen Liu, Qingxin Liang, Bin Chen, Wenxiang Zhang, Heping Ma

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Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

8 authors.

Yongzheng WangState Key Laboratory of Fluorine & Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China.

Shanshan WangState Key Laboratory of Fluorine & Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China.

Yinhui LiState Key Laboratory of Fluorine & Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China.

Shizhen LiuState Key Laboratory of Fluorine & Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China.

Qingxin LiangState Key Laboratory of Fluorine & Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China.

Bin ChenState Key Laboratory of Fluorine & Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China.

Wenxiang ZhangState Key Laboratory of Fluorine & Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China.

Heping MaState Key Laboratory of Fluorine & Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China. maheping@mail.xjtu.edu.cn.ORCID http://orcid.org/0000-0002-7551-2639

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The development of dynamically responsive soft porous crystals (SPCs) is crucial for advanced gas separation due to their stimuli-triggered structural transitions. Herein, we report a 3D covalent organic framework (FCOF-XJ) constructed from flexible tetrahedral (F-3D-Td) and rigid tetrahedral (3D-Td) building blocks, exhibiting unique temperature-dependent selective adsorption of xenon (Xe). FCOF-XJ features thermoresponsive -O-C-C-C-O- single bonds that enable temperature-dependent conformational switching. The adaptive pore structure of FCOF-XJ enables an Xe-triggered gate-opening effect, with 4 times increase of Xe adsorption and a high Xe/Kr selectivity (36.9 at 298 K, 1 bar) among porous organic materials, surpassing most of metal-organic frameworks (MOFs). Breakthrough experiments reveal a defined high-purity Xe recovery window from Xe/Kr mixtures under non-ideal dynamic conditions, enabled by thermoresponsive pore-gating dynamics. This work establishes a flexible COF platform for thermoresponsive and Xe-selective capture based on guest-triggered framework gating.

Identifiers

PMID42399272

DOI10.1038/s41467-026-75235-x

PMCPMC13470497

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.