Spectroscopic investigations of a novel tricyanofuran dye for nonlinear optics |
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| Authors: | Han Likun Jiang Yadong Li Wei Li Yuanxun Hao Peng |
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| Affiliation: | State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China. |
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| Abstract: | A novel tricyanofuran dye was synthesized and the dye-in-polymer films were fabricated by spin-coating process. The spectroscopic properties of the dye in the solutions and polymer films were investigated by the absorption spectra and fluorescence emission spectra. It is found that the absorption and fluorescence maxima are largely red-shifted along with the increase of the solvent polarity. And the low values of fluorescence quantum yield in higher polarity solvents suggest the presence of twisted intramolecular charge transfer states of the dye. Moreover, the second order polarizability value of the novel dye was estimated based on the quantum-mechanical two-level model. |
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| Keywords: | Spectroscopic properties Quantum yield Stocks shift Second order polarizability |
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