Complex-Plane Impedance Study on a Hydrogen-Doped Copper Coordination Polymer: N,N ′-bis-(2-hydroxyethyl)dithiooxamidato-copper(II)

AC conductivity measurements with an impedance analyzer were carried out for a hydrogen-doped coordination polymer, N , N '-bis-(2-hydroxyethyl)dithiooxamidatocopper(II), in order to estimate the protonic condctivity ( p ). The log p was linearly increased from 2.6 2 10 m 9 to 2.2 2 10 m 6 S cm m 1 with relative humidity (RH) from 45 to 100% at 300 K. A slight hysteresis of protonic conductivity was observed upon increasing and decreasing RH, which implies that H 3 O + is generated by a reaction between water molecule and acid-base polymer near RH∼100%. protonic conduction coordination polymer AC conductivity measurement hydrogen doping electronic conduction inorganic-organic hybrids