Triarylborane-Modified Aza[7]helicenes Featuring Two-Photon Absorption and Dual-State Circularly Polarized Luminescence
We here disclose two borylphenyl-substituted aza[7]helicenes, in which two 2,6-bis(trifluoromethyl)phenyl groups were introduced on boron to enhance the charge transfer feature. Both molecules display circularly polarized luminescence (CPL) with high Φ<sub>F</sub> values in solutions (Φ<sub>F</sub> = 0.15-0.56), PMMA-doped film (Φ<sub>F</sub> = 0.99), and neat film (Φ<sub>F</sub> = 0.77-0.82). Moreover, they exhibit two-photon absorption (TPA) with δ<sub>TPA</sub> reaching 329 GM for the quadrupolar derivative, representing one of the very rare examples with the integration of dual-state CPL and TPA properties.
Authors
- Run-Ze Wang
- Cui‐Hua Zhao (ORCID: https://orcid.org/0000-0002-4077-5324)
- Min Wang (ORCID: https://orcid.org/0009-0000-1687-5360)
- Zhi-Qiang Liu
Institutions
- Shandong University (CN)
- Weifang University of Science and Technology (CN)
- Advanced Materials and Devices (United States) (US)
- State Key Laboratory of Crystal Materials
Publication Details
- Journal
- Organic Letters
- Published
- 2026-02-19
- DOI
- https://doi.org/10.1021/acs.orglett.6c00398
- Primary Topic
- Synthesis and Properties of Aromatic Compounds
- Type
- article
- Field-Weighted Citation Impact
- 0.00