Journal
CHEMSUSCHEM
Volume 14, Issue 22, Pages 4958-4972Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.202101625
Keywords
covalent organic frameworks; hydrogen; photocatalysis; porous materials; tailor-made structures
Funding
- NSFC [22072022, 21773031, 22011530144]
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This Minireview introduces state-of-the-art COF photocatalysts based on different linkages and discusses the origin of photocatalytic activities for hydrogen evolution. It focuses on advancements in synthetic methodologies, structural design, and photoelectronic properties relevant to photocatalytic performance of three typical COF photocatalysts with different linkages (-C=N-, O=C-C=C-NH-, and -C=C-). The review is expected to elucidate structure-property relationships and provide insights for designing photoactive COFs with enhanced performances.
Crystalline covalent organic frameworks (COFs) are porous polymeric semiconductors with network topologies, which are built from the integration of selected organic blocks with covalent bond linkages. They have shown great promise for artificial photosynthesis, owing to broad light harvesting, high crystallinity, and high carrier mobility. This Minireview introduces state-of-the-art COF photocatalysts based on different linkages and discusses the origin of photocatalytic activities for hydrogen evolution. Three typical COF photocatalysts, with linkages including imine (-C=N-), beta-ketoenamine (O=C-C=C-NH-), and vinylene (-C=C-), are discussed with a particular focus on the advancements in synthetic methodologies and structural design, as well as photoelectronic properties that are relevant to photocatalytic performance. The Minireview is expected to elucidate their structure-property relationships and the way to design photoactive COFs with enhanced performances.
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