Photophysical properties of donor–acceptor antiaromatic organoboron compounds based on dithienodiborinines

Adachi Yohei

Hasegawa Takumi

Ohshita Joji

Chemistry Letters

Boron-containing antiaromatics, such as diborinines and boroles, have sparked interest in materials chemists owing to their exciting optical properties and high Lewis acidity. In this study, we synthesized donor–acceptor (D–A) type diborinines fused with thiophene rings by introducing electron-donating amino-substituted aryl groups onto boron and elucidated their properties. The D–A type dithienodiborinines exhibited long-wavelength absorption arising from their D–A interactions and antiaromaticity. In addition, their fluorescence intensity increased under oxygen-free conditions, indicating thermally activated delayed fluorescence.

antiaromatic

boron

diborinine

eng

Oxford

This is a pre-copyedited, author-produced version of an article accepted for publication in Chemistry Letters following peer review. The version of record Volume 53, Issue 8, August 2024, upae161 is available online at: https://doi.org/10.1093/chemle/upae161.

This is not the published version. Please cite only the published version.

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[DOI] https://doi.org/10.1093/chemle/upae161 isVersionOf