Attenuating Imine Bond Polarization in Covalent Organic Frameworks Accelerates Charge and Proton Transport for High-Efficiency Photocatalytic Hydrogen Evolution

Key Points

• This research aims to improve charge and proton transport in covalent organic frameworks (COFs) by attenuating imine bond polarization.
• Investigated imine bond polarization effects within covalent organic frameworks.
• Measured photocatalytic hydrogen evolution efficiency and quantum yield at 450 nm.
• Achieved an apparent quantum yield of 21.8 ± 0.80% at 450 nm.
• Demonstrated significant performance improvements over neutral and electron-withdrawing counterparts.