Rational design of electron-deficient COFs via ketone and sulfone functionalization for dramatically enhanced photocatalytic hydrogen peroxide production.

Rational integration of ketones and sulfones into electron-deficient COFs creates an internal electric field that optimizes charge separation and carrier mobility, boosting superoxide radical generation for photocatalytic H2O2 production. Sulfone-functionalized Tp-DDS outperforms its electron-rich counterpart, establishing a clear structure-activity relationship for next-generation COF photocatalysts.