Polyoxometalate-functionalized metal–organic frameworks with improved water retention and uniform proton-conducting pathways in three orthogonal directions

Polyoxometalate-functionalized metal–organic frameworks featuring uniform proton-conducting pathways in three orthogonal directions, good water retention and stability were prepared. The proton conductivity of the hybrid material was observed to increase by 5 orders of magnitude compared to that of the parent material HKUST-1.