1. Linear and nonlinear optical properties of two novel D–π–A–π–D type conjugated oligomers with different donors
- Author
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Huang, Tian-Hao, Yang, Dan, Kang, Zhi-Hui, Miao, Er-Long, Lu, Ran, Zhou, Hui-Peng, Wang, Fei, Wang, Gao-Wen, Cheng, Peng-Fei, Wang, Ying-Hui, and Zhang, Han-Zhuang
- Subjects
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OPTICAL properties of conjugated polymers , *OLIGOMERS , *FLUORENE , *TRIPHENYLAMINE , *ELECTRON donor-acceptor complexes , *REDSHIFT - Abstract
Abstract: 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. [Copyright &y& Elsevier]
- Published
- 2013
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