A Luminescent Stable Triarylmethyl Diradical with an Axially Chiral Spacer
Two units of a highly stable luminescent triarylmethyl radical (PyBTM) were bridged using a chiral octahydrobinaphthyl moiety, resulting in a diradical with sufficient stability to enable the measurement of its chiroptical properties. To synthesize this diradical, a novel boronic ester radical precursor, αH-PyBTM-B(Epin), was designed. The use of this precursor significantly improved the yield and streamlined the preparation of stable luminescent radical-substituted molecules. The photoluminescence quantum yield (PLQY) of the diradical was measured to be 10 % in chloroform. Furthermore, both circular dichroism (CD) and circularly polarized luminescence (CPL) were successfully observed.
Authors
- Yohei Hattori (ORCID: https://orcid.org/0000-0001-9281-0403)
- Tetsuro Kusamoto (ORCID: https://orcid.org/0000-0001-8391-4526)
- Ryota Matsuoka (ORCID: https://orcid.org/0000-0002-2658-9322)
- Yoshitane Imai (ORCID: https://orcid.org/0000-0003-4415-7432)
- Shun Yoshida (ORCID: https://orcid.org/0009-0001-2595-4260)
- Kingo Uchida (ORCID: https://orcid.org/0000-0001-5937-0397)
- Gwénaël Rapenne (ORCID: https://orcid.org/0000-0002-4993-4213)
- Tsuyoshi Kawai (ORCID: https://orcid.org/0000-0002-9566-3573)
- Mihoko Yamada (ORCID: https://orcid.org/0000-0002-3789-6600)
- Daiya Suzuki
- Ryo Fujita (ORCID: https://orcid.org/0000-0002-8559-6012)
- Atsumi Baba
Institutions
- Ryukoku University (JP)
- Centre National de la Recherche Scientifique (FR)
- Université Fédérale de Toulouse Midi-Pyrénées (FR)
- Centre d’Élaboration de Matériaux et d’Études Structurales (FR)
- Nara Institute of Science and Technology (JP)
- Kindai University (JP)
- The University of Osaka (JP)
Publication Details
- Journal
- Chemistry - A European Journal
- Published
- 2025-03-06
- DOI
- https://doi.org/10.1002/chem.202500284
- Citations
- 10
- Primary Topic
- Synthesis and Properties of Aromatic Compounds
- Type
- article
- Field-Weighted Citation Impact
- 9.36
Funders
- Kyoto Technoscience Center
- Japan Society for the Promotion of Science
- Core Research for Evolutional Science and Technology