Purely inorganic frameworks based on polyoxometalate clusters with abundant phosphate groups: single-crystal to single-crystal structural transformation and remarkable proton conduction

Abstract

A pure-inorganic framework 1 underwent a SCSC transformation to form a new framework 1′, which has high proton conductivity.

Application of Polyoxometalate-based composites for sensor systems: A review

“…POMs can be considerably altered when mixed with organic moieties including ionic liquids or quaternary ammonium salts [54]. Certain POMs exhibit luminous properties; others, which include ferromagnetic transition metal atoms with free electrons, display anomalous magnetic characteristics and are being studied as nano-computer storage systems.…”

High Proton‐Conductivity in Covalently Linked Polyoxometalate‐Organoboronic Acid‐Polymers

“…Recently, crystalline molecular materials including POMs [36–38] and coordination polymers (e.g. metal‐organic frameworks) [46] have received immense attention as solid‐state proton‐conductors, owing to their possible role as solid‐state electrolytes.…”

“…This is based on pioneering studies which have demonstrated the use of POMs for proton conduction under harsh conditions incompatible with organic proton exchange membranes [29–34] . Several strategies have been employed to introduce proton conductivity in POMs, including introduction of surface protonation sites, [29, 35] design of hydrophilic channels [36, 37] and spatially confined hydrogen‐bonded network formation, often in the pores of framework materials [30, 38] . In particular, the design of polymeric POM aggregates and exploration of their proton conduction could trigger synergisms between inorganic and bio‐chemistry, as in nature, bio‐polymers (e.g.…”

High Proton‐Conductivity in Covalently Linked Polyoxometalate‐Organoboronic Acid‐Polymers

“…This is based on pioneering studies which have demonstrated the use of POMs for proton conduction under harsh conditions incompatible with organic proton exchange membranes. [29][30][31][32][33][34] Several strategies have been employed to introduce proton conductivity in POMs, including introduction of surface protonation sites, [29,35] design of hydrophilic channels [36,37] and spatially confined hydrogenbonded network formation, often in the pores of framework materials. [30,38] In particular, the design of polymeric POM aggregates and exploration of their proton conduction could trigger synergisms between inorganic and bio-chemistry, as in nature, bio-polymers (e.g.…”

“…Recently, crystalline molecular materials including POMs [36][37][38] and coordination polymers (e.g. metal-organic frameworks) [46] have received immense attention as solidstate proton-conductors, owing to their possible role as solidstate electrolytes.…”