| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1495133 | Optical Materials | 2013 | 5 Pages |
Experimental and theoretical studies on the donor-dependent optical characteristics of two D–π–A–π–D type linear fluorenone-based conjugated oligomers are presented, where fluorene and triphenylamine act as the donors, respectively. Because of the strong electron-donating ability, the triphenylamine chromophores lead to red-shifts of spectral features, shorten the excited state lifetime, and enhance the two-photon fluorescence efficiency and two-photon absorption cross-section in comparison with fluorene groups. Quantum chemical calculations provide complementary information regarding the molecular structures and the frontier orbitals, which can provide a deep insight into the electronic structure and properties of oligomers.
Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (155 K)Download as PowerPoint slideHighlights► Donor-dependent optical properties of novel fluorenone-based oligomers are studied. ► Triphenylamine donor red-shifts the steady-state spectra compared to fluorene. ► Compared to fluorene donor, triphenylamine could increase the TPF efficiency. ► Triphenylamine donor could enhance the TPA cross-section compared to fluorene. ► Electronic structure and properties were learned by quantum chemical calculations.
