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<p>Porous liquids (PLs), integrating porous hosts into flowing liquids through intermolecular interactions, attract significant attention, while their controlled synthesis remains challenging. Here we report a controllable in-situ transformation strategy to fabricate distinct types of PLs from the same supramolecular framework (SMF). Two isomorphic polyethylene-glycol-based ionic liquids, IL-Br and IL-NTf<sub>2</sub>, differing only in anions, exhibit contrasting electrostatic interactions with the SMF. Strong attraction between IL-Br and the SMF disrupts the ionic bonds within the framework, yielding a type II PL, PL2(SMF-Br), while electrostatic repulsion in IL-NTf<sub>2</sub> preserves the framework, producing a type III PL, PL3(SMF-NTf<sub>2</sub>). These tailored host–solvent interactions endow PL2(SMF-Br) with over twice the CO<sub>2</sub> uptake and photoresponsivity of its counterpart, as well as record-high CO<sub>2</sub> capacity among reported type II PLs. In this work, we establish a general strategy for tunable PL construction through electrostatically guided host–solvent design.</p>

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From the same supramolecular framework to distinct types of porous liquids via in-situ transformation

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月23日

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  • Yang Liu,
  • Han-Yan Jin,
  • Meng-Meng Li,
  • Tao Yang,
  • Mingrui Zuo,
  • Chenrui Li,
  • Lifeng Ding,
  • Lin-Bing Sun

摘要

Porous liquids (PLs), integrating porous hosts into flowing liquids through intermolecular interactions, attract significant attention, while their controlled synthesis remains challenging. Here we report a controllable in-situ transformation strategy to fabricate distinct types of PLs from the same supramolecular framework (SMF). Two isomorphic polyethylene-glycol-based ionic liquids, IL-Br and IL-NTf2, differing only in anions, exhibit contrasting electrostatic interactions with the SMF. Strong attraction between IL-Br and the SMF disrupts the ionic bonds within the framework, yielding a type II PL, PL2(SMF-Br), while electrostatic repulsion in IL-NTf2 preserves the framework, producing a type III PL, PL3(SMF-NTf2). These tailored host–solvent interactions endow PL2(SMF-Br) with over twice the CO2 uptake and photoresponsivity of its counterpart, as well as record-high CO2 capacity among reported type II PLs. In this work, we establish a general strategy for tunable PL construction through electrostatically guided host–solvent design.