Advanced Materials

Supramolecular Crosslinked Linear Poly(Trimethylene Iminium Trifluorosulfonimide) Polymer Gels Sensitive to Light and Thermal Stimuli


  • This study was partially supported by the 21st Century COE Program “Functional Innovation of Molecular Informatics” of the Ministry of Education, Culture, Science, Sports, and Technology (Japan). Supporting Information is available online from Wiley InterScience or from the author.


A photo- and thermoresponsive physical gel has been developed based on crosslinked supramolecular polymer networks. The gel shows reversible sol–gel phase transitions induced by heat or light irradiation. The photoinduced sol–gel phase transition shown in the figure results from the cis–trans photoisomerization of an azobenzene group present in the crosslinker.

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