| Summary: | Polymer organogels formed through dynamic interactions are interesting for various applications. The fabrication of polymer organogels in polar solvents through ionic interaction is rare, although such organogels in non-polar organic solvents have been well studied. Herein, polymer organogels in a polar solvent <i>N,N</i>-dimethyl formamide (DMF) were fabricated from a triblock copolymer, poly(4-vinyl pyridine)-<i>block</i>-poly(ethylene glycol)-<i>block</i>-poly(4-vinyl pyridine) (4VP<sub>m</sub>-EG<sub>n</sub>-4VP<sub>m</sub>), and a fluorinated surfactant, perfluorooctanoic acid (PFOA), and their microphase separation and properties were studied. Ordered microphase separation and the crystalline structures were revealed by small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS), respectively. All the 4VP<sub>m</sub>-EG<sub>n</sub>-4VP<sub>m</sub>/PFOA organogels are sensitive to temperature, and the ratio of PFOA to pyridine groups reversibly. The polymer organogels are also responsive to triethylamine and triethylammonium acetate.
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