Proton Transport and the Water Environment in Nafion Fuel Cell Membranes and AOT Reverse Micelles

摘要: The properties of confined water and diffusive proton-transfer kinetics in the nanoscopic channels Nafion fuel cell membranes at various hydration levels are compared to a series well-characterized AOT reverse micelles with known nanopool sizes using photoacid pyranine as molecular probe. side chains terminated by sulfonate groups sodium counterions that arrayed along channels. has head form interface micelle's nanopool. extent excited-state deprotonation is observed steady-state fluorescence measurements. Proton-transfer orientational relaxation measured time-dependent time-correlated single photon counting. time dependence related proton transport away from photoacid. reflecting long scale an ∼t-0.8 power law decay contra...