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- W1998430847 abstract "Organic compounds containing conjugated carbon chains have been extensively investigated due to their interesting properties including nonlinear optical response. Polyynes are a group of compounds where the conjugation can be modified by appropriate selection of end-groups, enabling control and improvement of nonlinear effects. In this work, we investigate three newly synthesized aryl end-capped octatetraynes, exhibiting strong nonlinear absorption and nonlinear refraction properties, which can be attributed to the presence of aryl end-groups with electron-withdrawing functional groups suitable for further extending the conjugation. Nonlinear optical measurements were performed using a f-scan (modified Z-scan) technique with a femtosecond laser system at various wavelengths in the visible and near-infrared range (540-1600 nm), revealing strong negative third-order nonlinear refraction (3NR) and two-photon absorption (2PA) below 600 nm and a noticeable three-photon absorption (3PA) at longer wavelengths. The results of spectroscopic characterization and the crystallographic data for the investigated compounds are also presented." @default.
- W1998430847 created "2016-06-24" @default.
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- W1998430847 date "2015-01-01" @default.
- W1998430847 modified "2023-09-28" @default.
- W1998430847 title "Spectral dependence of nonlinear optical properties of symmetrical octatetraynes with p-substituted phenyl end-groups" @default.
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- W1998430847 doi "https://doi.org/10.1039/c5cp01661d" @default.
- W1998430847 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25942332" @default.
- W1998430847 hasPublicationYear "2015" @default.
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