“…20 The addition of Cu-BTC to multiblock copolymers, such as sulfonated polysulfone and polyphenylsulfone, improves thermal stability even at elevated temperatures. 21 This combination of polymers and MOFs not only stabilizes mechanical properties but also overcomes challenges in MOF film formation, facilitating the formation of continuous proton transport channels through electrostatic interactions. 22 Besides pure acid groups (-CO 2 H, -SO 3 H, and -PO 3 H) exhibiting high proton conductivity, 23,24 certain mixed acidbase systems have superior proton conductivity to pure acid systems.…”