Polymerized Paired Ions as Polymeric Ionic Liquid-Proton Conductivity.
A new polymerized ionic liquid has been derived by photopolymerization of a stimuli-responsive ionic liquid surfactant, ILAMPS, which is composed of polymerizable, paired ions. The cation is 1-methyl-3-[11-(acryloyloxy)undecyl] imidazolium (IL), and the anion is 2-acrylamido-2-methyl-1-propanesulfonate (AMPS). This ion combination is a new ionic liquid. The resulting hygroscopic resins are highly polarizable, suitable for sensor design and for ultracapacitor fabrication and proton conducting. Interactions of imidazolium with anions provide basis for stimuli-responsiveness, and are used to promote proton transport. Doping with one equivalent of HPF6 at 0% relative humidity produces a 100-fold increase in proton conductivity at 100-125 °C and activation energies for proton transport lower than those of Nafion at water loadings less than 5 per sulfonate.
School of Engineering Technology, Eastern Michigan University, Ypsilanti, MI, 48197, USA.
Hong
H
Gu
College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou, 215345, China.
Feng
F
Yan
School of Engineering Technology, Eastern Michigan University, Ypsilanti, MI, 48197, USA.|College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou, 215345, China.
John
J
Texter
D004553:Electric Conductivity; D052578:Ionic Liquids / Q000138:chemical synthesis* / Q000737:chemistry; D007477:Ions / Q000737:chemistry; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D011522:Protons; D013696:Temperature
D052578:Ionic Liquids; D007477:Ions; D011108:Polymers; D011522:Protons
activation energy for proton transport; ionic liquids; membrane polarization; polymerized ionic liquid; proton conductivity