Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 28, Pages 8729-8733Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201803863
Keywords
carbon nitride; donor-acceptor systems; charge separation; polymers; photocatalysis
Categories
Funding
- National Key RAMP
- D Program of China [2018YFA0209301]
- National Natural Science Foundation of China [21425309, 21861130353, 21761132002]
- 111 Project
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Natural photosynthesis serves as a model for energy and chemical conversions, and motivates the search of artificial systems that mimic natures energy- and electron-transfer chains. However, bioinspired systems often suffer from the partial or even large loss of the charge separation state, and show moderate activity owing to the fundamentally different features of the multiple compounds. Herein, a selenium and cyanamide-functionalized heptazine-based melon (DA-HM) is designed as a unique bioinspired donor-acceptor (D-A) light harvester. The combination of the photosystem and electron shuttle in a single species, with both n- and p-type conductivities, and extended spectral absorption, endows DA-HM with a high efficiency in the transfer and separation of photoexcited charge carriers, resulting in photochemical activity. This work presents a unique conjugated polymeric system that shows great potential for solar-to-chemical conversion by artificial photosynthesis.
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