Investigation on the Second-Order Nonlinear Optical Responses in the Keto-Enol Equilibrium of Anil Derivatives

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• 作者：Aur&eacute ; lie Plaquet ; Maxime Guillaume ; Benoî ; t Champagne ; L&eacute ; a Rougier ; Fabien Manç ; ois ; Vincent Rodriguez ; Jean-Luc Pozzo ; Laurent Ducasse ; Fr&eacute ; d&eacute ; ric Castet
• 刊名：Journal of Physical Chemistry C
• 出版年：2008
• 出版时间：April 10, 2008
• 年：2008
• 卷：112
• 期：14
• 页码：5638 - 5645
• 全文大小：248K
• 年卷期：v.112,no.14(April 10, 2008)
• ISSN：1932-7455

文摘

This paper addresses the linear and second-order nonlinear optical properties of two anil derivatives and inparticular their variations upon switching between the enol-imine and keto-amine forms. Quantum chemicalevaluations of the first hyperpolarizabilities, accounting for both solvent and electron correlation effects, arecompared with hyper-Rayleigh scattering and electric field-induced second harmonic generation measurements.For both compounds, the E/K first hyperpolarizability ratios are larger than 2, demonstrating that the enolforms present the largest responses but also that the switching is associated with a substantial contrast.