Coherent Fusion of Water Array and Protonated Amine in a Metal–Sulfate-Based
Coordination Polymer for Proton Conduction
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Abstract
A new
function of metal–sulfate-based coordination polymer (CP) for
proton conduction was investigated through rational integration of
a continuous water array and protonated amine in the coordination
space of the CP. The H-bonded arrays of water molecules along with
nitrogen-rich aromatic cation (protonated melamine) facilitate proton
conduction in the compound under humid conditions. Although several
reports of metal–oxalate/phosphate-based CPs showing proton
conduction are known, this is the first designed synthesis of a metal–sulfate-based
CP bearing water arrays functioning as a solid-state proton conductor