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Issue 81, 2019
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Phthalimide-based “D–N–A” emitters with thermally activated delayed fluorescence and isomer-dependent room-temperature phosphorescence properties

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Abstract

Phthalimide-based “D–N–A” emitters o-AI-Cz, m-AI-Cz and p-AI-Cz showed TADF and RTP properties due to their small ΔEST in both film and crystalline states. In particular, o-AI-Cz exhibited an ultralong RTP with a lifetime of 602 ms in air and remarkable afterglow, which could allow it to be used as a security ink for application in anti-counterfeiting materials. Moreover, o-AI-Cz showed intense intramolecular interaction between the donor and the acceptor subunits, while p-AI-Cz could form regular hexagonal pores with a diameter of 13.171 Å in the solid state, which might result in their different RTP properties.

Graphical abstract: Phthalimide-based “D–N–A” emitters with thermally activated delayed fluorescence and isomer-dependent room-temperature phosphorescence properties

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Publication details

The article was received on 17 Aug 2019, accepted on 15 Sep 2019 and first published on 16 Sep 2019


Article type: Communication
DOI: 10.1039/C9CC06384F
Chem. Commun., 2019,55, 12172-12175

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    Phthalimide-based “D–N–A” emitters with thermally activated delayed fluorescence and isomer-dependent room-temperature phosphorescence properties

    L. Zhang, M. Li, T. Hu, Y. Wang, Y. Shen, Y. Yi, H. Lu, Q. Gao and C. Chen, Chem. Commun., 2019, 55, 12172
    DOI: 10.1039/C9CC06384F

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