Waszkowska Karolina, Krupka Anastasiia, Smokal Vitaliy, Kharchenko Oksana, Migalska-Zalas Anna, Frasinyuk Mykhaylo, Wielgosz Robert, Andrushchak Anatoliy, Sahraoui Bouchta
Laboratory MOLTECH-Anjou, University of Angers, CNRS UMR 6200, 2 Bd Lavoisier, CEDEX 01, 49045 Angers, France.
Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 60 Volodymyrska, 01033 Kiev, Ukraine.
Materials (Basel). 2022 Sep 1;15(17):6076. doi: 10.3390/ma15176076.
In this study, new photonics architectures and aurone-based methacrylic polymers were designed and synthesized for their optical and nonlinear optical properties. The studied polymeric thin films were deposited by spin coating method. SHG and THG effects were measured via Maker fringe technique in transmission mode and determined using theoretical models. Investigations involved the theoretical quantum chemical calculation of dipole moments, frontier molecular orbital HOMO and LUMO energies, and first (β) and second (γ) hyperpolarizabilities. We determined the impact of the substitution in the para position of the phenyl ring and at the dipole moment of the chromophore on the nonlinear optical properties of the investigated polymers. The presented theoretical and experimental studies provide important information with respect to the design of methacrylic-based polymeric thin film devices and supplement existing knowledge with respect to their nonlinear behaviour.
在本研究中，设计并合成了新型光子学结构和基于橙酮的甲基丙烯酸聚合物，以研究其光学和非线性光学性质。通过旋涂法制备了所研究的聚合物薄膜。采用Maker条纹技术在透射模式下测量了二次谐波产生（SHG）和三次谐波产生（THG）效应，并使用理论模型进行了测定。研究涉及偶极矩、前沿分子轨道HOMO和LUMO能量以及一阶（β）和二阶（γ）超极化率的理论量子化学计算。我们确定了苯环对位取代和发色团偶极矩对所研究聚合物非线性光学性质的影响。所呈现的理论和实验研究为基于甲基丙烯酸的聚合物薄膜器件的设计提供了重要信息，并补充了关于其非线性行为的现有知识。
