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Title: Photoinduced radical emission in a coassembly system
Authors: Li, Yiran
Baryshnikov, Glib V.
Xu, Chenggang
Ågren, Hans
Zhu, Liangliang
Yi, Tao
Zhao, Yanli
Wu, Hongwei
Keywords: Science::Chemistry
Issue Date: 2021
Source: Li, Y., Baryshnikov, G. V., Xu, C., Ågren, H., Zhu, L., Yi, T., Zhao, Y. & Wu, H. (2021). Photoinduced radical emission in a coassembly system. Angewandte Chemie International Edition, 60(44), 23842-23848.
Project: RT12/19
Journal: Angewandte Chemie International Edition 
Abstract: Developing radical emission at ambient conditions is a challenging task since radical species are unstable in air. In the present work, we overcome this challenge by coassembling a series of tricarbonyl-substituted benzene molecules with polyvinyl alcohol (PVA). The strong hydrogen bonds between the guest dopants and the PVA host matrix protect the free radicals of carbonyl compounds after light irradiation, leading to strong solid state free radical emission. Changing temperature and peripheral functional groups of the tricarbonyl-substituted benzenes can influence the intensity of the radical emission. Quantum-chemical calculations predict that such free radical fluorescence originates from anti-Kasha D2 →D0 vertical emission by the anion radicals. The photoinduced radical emission by the tricarbonyl-substituted benzenes was successfully utilized for information encryption application.
ISSN: 1433-7851
DOI: 10.1002/anie.202110405
Rights: © 2021 Wiley-VCH GmbH. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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