A heteropolytungstate based 2D layered porous framework with high proton conductivity.

A heteropolytungstate cluster [{Ru 2 O(bpy) 2 } 2 {Bi 2 W 32 O 110 }] 10- (bpy = C 10 H 8 N 2 ) was incorporated into a 2 : 1 type layered porous framework by interweaving the Na + bridged cluster chains through the hydrogen bonding ability of the bpy ligands. It features multiple pore channels rich in hydrogen-bond network, contributing high conductivities > 10 -2 S cm -1 at 298-358 K and 85% RH.