10 November 2003 Quadratic nonlinear optical properties of novel pyridinium salts
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A number of novel salts of dipolar cations containing dimethylamino electron donor and pyridinium electron acceptor groups have been prepared and studied by using various physical techniques including hyper-Rayleigh scattering and Stark spectroscopy. In addition to showing very large molecular static first hyperpolarizabilities, several of these salts exhibit pronounced bulk quadratic nonlinear optical effects. Related compounds in which the electron donor is a ruthenium(II) ammine centre have also been investigated, allowing interesting comparisons to be made between transition metal-containing and purely organic nonlinear optical chromophores.
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Benjamin J. Coe, Benjamin J. Coe, Lathe A. Jones, Lathe A. Jones, James A. Harris, James A. Harris, Inge Asselberghs, Inge Asselberghs, Kurt Wostyn, Kurt Wostyn, Koen J. Clays, Koen J. Clays, Andre P. Persoons, Andre P. Persoons, Bruce S. Brunschwig, Bruce S. Brunschwig, Javier Garin, Javier Garin, Jesus Orduna, Jesus Orduna, } "Quadratic nonlinear optical properties of novel pyridinium salts", Proc. SPIE 5212, Linear and Nonlinear Optics of Organic Materials III, (10 November 2003); doi: 10.1117/12.506832; https://doi.org/10.1117/12.506832

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