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Issue 20, 2015
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Spectral dependence of nonlinear optical properties of symmetrical octatetraynes with p-substituted phenyl end-groups

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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.

Graphical abstract: Spectral dependence of nonlinear optical properties of symmetrical octatetraynes with p-substituted phenyl end-groups

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Publication details

The article was received on 22 Mar 2015, accepted on 15 Apr 2015 and first published on 20 Apr 2015


Article type: Paper
DOI: 10.1039/C5CP01661D
Author version available: Download Author version (PDF)
Citation: Phys. Chem. Chem. Phys., 2015,17, 13680-13688
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    Spectral dependence of nonlinear optical properties of symmetrical octatetraynes with p-substituted phenyl end-groups

    A. Arendt, R. Kołkowski, M. Samoc and S. Szafert, Phys. Chem. Chem. Phys., 2015, 17, 13680
    DOI: 10.1039/C5CP01661D

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