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>).
Publication Details
- Journal
- Figshare
- Published
- 2025-02-20
- DOI
- https://doi.org/10.1021/acs.orglett.4c04821.s001
- Primary Topic
- Synthesis and Properties of Aromatic Compounds
- Type
- article
- Field-Weighted Citation Impact
- 0.00