Perfluorosulfonic acid ion exchange membrane is a solid polymer electrolyte. It uses polytetrafluoroethylene as the skeleton structure, and the branch is a perfluorovinyl ether structure with a sulfonic acid group at the end group. https://ionresins.alfa-chemistry.com/products/perfluorinated-sulfonic-acid-ion-selective-membranes.html
Guanidine-Based Ionic Liquids - ..
Alfa Chemistry provides a wide range of guanidine-based ionic liquids.
https://ionicliquids.alfa-chemistry.com/products/guanidine-based-ionic-liquids.html