Fig. 6
From: Magnetic field alignment of stable proton-conducting channels in an electrolyte membrane

Magnetometry analysis. VSM measurementĀ to determine the magnetism of individual membrane formulation components and membranes is shown. a Membrane formulation components CP4VP, PWA, and PSf display diamagnetism, and cannot be magnetically aligned. b Membrane NM-45PC is diamagnetic, but MM-45PC has paramagnetic properties in both TP and IP directions due to the formation of a paramagnetic CP4VP/PWA complex under magnetic field. The much higher Ļ value in TP (Supplementary TableĀ 2) indicates that the paramagnetic complex is synchronously oriented in the TP direction during magnetic field solution casting (dashed lines are used to guide the eyes). VSM:Ā vibrating sample magnetometer;Ā CP4VP: ferrocyanide-coordinated poly(4-vinylpyridine); PWA: phosphotungstic acid; PSf: polysulfone; NM-45PC: normal-cast membrane with 45āwt% loading of proton-conducting components; MM-45PC: magnetic-cast membrane with 45āwt% loading of proton-conducting components; TP: through-plane; IP: in-plane. Source data are provided as a Source Data file