| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5225843 | Tetrahedron | 2010 | 8 Pages |
A novel multi-branched chromophore containing 2,3-diarylquinoxalinyl units as the electron-acceptors had been synthesized and its nonlinear optical properties were characterized in the femtosecond and nanosecond regime. The experimental results show that the studied fluorophore possesses strong and wide-dispersed two-photon absorption in near infrared (NIR) region. It is demonstrated that the incorporation of 2,3-disubstituted quinoxaline moieties as a part of Ï-conjugation in a dye molecule could be a useful approach toward large molecular two-photon absoptivities within the studied spectral region. Effective optical-power-attenuation behaviors in the nanosecond time domain of this compound were also investigated and the results indicate that such dye molecule can be a potential material as a broadband and quick-responsive optical limiter especially when against those laser lights with longer pulses.
Graphical abstractA novel multi-branched chromophore with 2,3-diarylquinoxalinyl units as the electron-pulling units had been synthesized and experimentally shown to possess large two-photon absorption as well as wide-dispersed effective optical-power-attenuation properties in the near-IR region.Download full-size image
