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  Green radicals of potassium poly(heptazine imide) by light and benzylamine

Markushyna, Y., Lamagni, P., Teutloff, C., Catalano, J., Lock, N., Zhang, G., et al. (2019). Green radicals of potassium poly(heptazine imide) by light and benzylamine. Journal of Materials Chemistry A, 7(43), 24771-24775. doi:10.1039/C9TA09500D.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-D5EF-F Version Permalink: http://hdl.handle.net/21.11116/0000-0005-45CC-8
Genre: Journal Article

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 Creators:
Markushyna, Yevheniia1, Author              
Lamagni, Paolo1, Author              
Teutloff, Christian, Author
Catalano, Jacopo, Author
Lock, Nina, Author
Zhang, Guigang1, Author              
Antonietti, Markus2, Author              
Savateev, Aleksandr1, Author              
Affiliations:
1Aleksandr Savateev, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2421702              
2Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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 Abstract: The tinted long-lived ionic carbon nitride radicals were recently introduced and applied in photocatalysis and energy storage. Still the reason for higher activity in the photocatalytic reaction and optimal conditions for generating such radicals remain vague. Herein, we study conditions of carbon nitrides photocharging to achieve higher charge density and validate a convenient method to quantify a number of electrons accumulated in the carbon nitride semiconductors by quenching its radical with methylviologen in dark. In the presence of CO2, potassium poly(heptazine imide) can be charged up to 1000 μmol of electrons per gram of the material using benzylamine as electron donor. Under the same conditions mesoporous graphitic carbon nitride can accumulate only 50 μmol of electrons per gram. The products of benzylamine oxidative coupling are imine and ammonia.

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Language(s): eng - English
 Dates: 2019-10-092019
 Publication Status: Published in print
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 Identifiers: DOI: 10.1039/C9TA09500D
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Title: Journal of Materials Chemistry A
  Abbreviation : J. Mater. Chem. A
Source Genre: Journal
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Publ. Info: Cambridge, UK : Royal Society of Chemistry
Pages: - Volume / Issue: 7 (43) Sequence Number: - Start / End Page: 24771 - 24775 Identifier: ISSN: 2050-7488