Evidence map›Paper›PMID 40439596›Full record

ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2025

Microporous Polymer Membranes: Molecular Stents Enhanced Solvent-Accessibility for Organic Solvent Transport.

Shuang Guo, Chuanjie Fang, Jiaqi Li, Xiaohe Wang, Weilin Feng, Hukang Guo, Ming Xie, Yongbing Zhuang, Young Moo Lee, Liping Zhu

Abstract read
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In one paragraph

Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Shuang GuoMOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
Chuanjie FangMOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
Jiaqi LiMOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
Xiaohe WangMOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
Weilin FengMOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
Hukang GuoMOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
Ming XieDepartment of Polymer Science and Engineering, Department of Chemical Engineering, University of Bath, Bath, BA2 7AY, UK.
Yongbing ZhuangState Key Laboratory of Biochemical Engineering, Institute of Process Engineering, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China.
Young Moo LeeDepartment of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, South Korea.
Liping ZhuMOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.ORCID https://orcid.org/0000-0002-1553-4190

Funding

Fundamental Research Funds for the Central Universities 226-2025-00011Nano·Materials Technology Development program RS-2023-00235295National Key Research and Development Program of China 2021YFB3801503National Natural Science Foundation of China 52373218Ningbo S&T Innovation 2025 Major Special Programme 2023Z102"Pioneer" and "Leading Goose" R&D Program of Zhejiang 2024C03132"Pioneer" and "Leading Goose" R&D Program of Zhejiang 2024C03134
6 · The paper itself

Abstract

Microporous polymer membranes with high solvent permeability are pivotal for upgrading molecular separations in organic solvents, but this remains challenging due to numerous sub-0.4 nm ultra-micropores resulting from local tight packing, which limit solvent-accessibility. Herein, a microporous polyimide with high intrinsic free volume [PI-TB-NDI, naphthalenediimide (NDI) and Tröger's base (TB)] is synthesized for organic solvent nanofiltration. The resulting polymer showed high free volume because of fused aromatic rings and a twisted structure. Aromatic rings enhanced solvent resistance due to strong molecular interaction, but increased detrimental local tight packing as well. To suppress local tight packing without compromising the molecular interactions vital for stability, an ortho-methyl group is deliberately introduced onto the TB unit to increase both intra- and inter-molecular steric hindrance, imparting an H-shaped TB-NDI-TB molecular stent. On the introduction of ortho-methyl groups, the sub-0.4 nm ultra-micropores are enlarged to ultra-micropores (0.6-0.7 nm) to give the membrane with rich solvent-accessible sub-nanochannels. This resulted in an unprecedented enhancement of solvent permeability, with ethanol permeability 2-8 times greater than that of state-of-the-art polymer membranes with similar selectivity. These findings advance the design strategy of microporous membranes with well-tailored free volume without post-treatments, enabling upscaling and efficient separation of precious species in organic solvents.

Indexed as

free volumemicroporous polymer membranesmolecular stentsorganic solvent transport

Identifiers

PMID40439596
PMCPMC12376686

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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.