Superionic conduction in a Mg-containing covalent organic framework at intermediate temperature.

We report superionic conduction in a Mg-containing covalent organic framework (COF) at intermediate temperature in the absence of guest vapors. A COF containing Mg carriers and polyethylene oxide (PEO) chains in its channels (TPB-PEO-9-COF-Mg) was synthesized. TPB-PEO-9-COF-Mg showed superionic conductivity above 10 S cm under dry N at 160 °C.