Brightening Up Circularly Polarized Luminescence of [6]Helicenes by Fusion with BN-Heterocycles
We here disclose synthesis and properties of a series of BN-heterocycle-fused [6]helicenes. The fusion of the BN-heterocycle is helpful to extend π-conjugation and increase absorptivity and fluorescence efficiency of the first excited state. Especially, the double [6]helicene <b>BiBN-BiHC</b> shows outstanding circularly polarized luminescence performance with <i>B</i><sub>CPL</sub> up to 49.0 M<sup>-1</sup> cm<sup>-1</sup>, owing to its very high <i>Φ</i><sub>F</sub> (0.87), large ε (5.47 × 10<sup>4</sup> M<sup>-1</sup> cm<sup>-1</sup>), and fairly good |<i>g</i><sub>lum</sub>| (2.06 × 10<sup>-3</sup>).
Authors
- Cui‐Hua Zhao (ORCID: https://orcid.org/0000-0002-4077-5324)
- Min Wang (ORCID: https://orcid.org/0000-0002-9072-8331)
- Mengyuan Zhang (ORCID: https://orcid.org/0000-0002-6724-9658)
Institutions
- Shandong University (CN)
- Weifang University (CN)
Publication Details
- Journal
- Organic Letters
- Published
- 2025-02-20
- DOI
- https://doi.org/10.1021/acs.orglett.4c04821
- Citations
- 2
- Primary Topic
- Synthesis and Properties of Aromatic Compounds
- Type
- article
- Field-Weighted Citation Impact
- 1.87
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Shandong Province