CO 2 -Derived Synthesis of Hydrogen-Bonded Organic Framework Films

Key Points

• The study aims to synthesize and characterize a hydrogen-bonded organic framework (HOF) derived from CO2.
• Synthesis of a HOF using 4,4′,4″,4‴-(1,4-phenylenebis(methanetriyl))tetrakis(piperazine-1-carbaldehyde) derived from CO2.
• Single-crystal X-ray analysis to determine structural topology.
• Fabrication of thin films through spin-coating from precursor solutions.
• The synthesized HOF features a two-dimensional network with a sql topology.
• The material exhibits a BET surface area of 315 m2 g–1, indicating permanent porosity.
• The films demonstrate an in-plane proton conductivity of 6.2 × 10–3 S·cm–1 and an activation energy of 0.13 eV at 30 °C and 95% relative humidity.

Abstract