Multi-hydrophilic groups synergistic assembly ionic HOFs with multiple-water clusters and superprotonic single-crystal conductivity

Abstract

Two ionic hydrogen-bonded organic frameworks (iHOF-43 and iHOF-44) containing multiple-water clusters were prepared through the synergistic induction strategy of the multi-hydrophilic groups. The proton conductivity of iHOF-43 along the a-axis attained 1.66 × 10⁻¹ S cm⁻¹, which provided a guiding direction for the design of superprotonic conductive materials with multiple-water clusters.