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An Oxazine-Locked Covalent Organic Framework by a Tandem Pinner/Schiff Base Reaction for Hydrogen Peroxide
Shijie Pan1, Aodi Wang1, Chao Luo1
1School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
Abstract:
Linkage design is a decisive factor in determining the stability and function of covalent organic frameworks (COFs). Herein, we report oxazine-locked two-dimensional COFs constructed via an irreversible cascade reaction integrating consecutive Pinner and Schiff base reactions. This design couples framework crystallization with permanent linkage formation, yielding COFs with high chemical robustness under acidic and basic conditions. These frameworks act as efficient photocatalysts for H2O2 generation, illustrating a general synthetic route for stable COF-based photocatalysts in artificial photosynthesis.
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