Chromophores Supramolecular Organization in Polymer Materials with Quadratic Nonlinear-Optical Activity: Symmetry Aspects

Abstract

first_page settings Order Article Reprints Font Type: Arial Georgia Verdana Font Size: Aa Aa Aa Line Spacing:    Column Width:    Background: Open AccessAbstract Chromophores Supramolecular Organization in Polymer Materials with Quadratic Nonlinear-Optical Activity: Symmetry Aspects † by Marina Balakina *, Olga Fominykh, Timur Burganov, Anastasiya Sharipova and Sergey Katsyuba A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 420088 Kazan, Russia * Author to whom correspondence should be addressed. † Presented at Symmetry 2017—The First International Conference on Symmetry, Barcelona, Spain, 16–18 October 2017. Proceedings 2018, 2(1), 70; https://doi.org/10.3390/proceedings2010070 Published: 4 January 2018 (This article belongs to the Proceedings of The First International Conference on Symmetry) Download Download PDF Download PDF with Cover Download XML Versions Notes Organic dipole chromophores incorporated into a polymer matrix serve as molecular sources of its nonlinear-optical (NLO) activity. To exhibit quadratic NLO response, polymer material should be noncentrosymmetrical; this is achieved by the chromophores’ orientation in the applied electric field. Atomistic modelling of oligomers with covalently bound chromophores revealed the formation of stacked structures formed by chromophores with codirected dipole moments, in which two to four chromophores participate. The chromophores in the stacks are shown to be mutually shifted; the shift value determines the NLO characteristics of such structures. Another approach to the supramolecular organization of chromophore groups in the material is realized via Hydrogen bonds with the formation of the so-called J-dimers composed of chromophores, which results in the considerable growth of the NLO characteristics of the material. Thus, the formation of supramolecular aggregates could contribute to the optimization of the optical nonlinearity of the material.Vibrational spectroscopy provides the tool to monitor the presence of such aggregates. The comparison of experimental and quantum-chemically calculated spectra permits separate chromophores, H-dimers with different structures and J-dimers to be revealed in the material, and provides guidelines for the design of chromophores that are effective for the realization of materials with high quadratic NLO activity. © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Share and Cite MDPI and ACS Style Balakina, M.; Fominykh, O.; Burganov, T.; Sharipova, A.; Katsyuba, S. Chromophores Supramolecular Organization in Polymer Materials with Quadratic Nonlinear-Optical Activity: Symmetry Aspects. Proceedings 2018, 2, 70. https://doi.org/10.3390/proceedings2010070 AMA Style Balakina M, Fominykh O, Burganov T, Sharipova A, Katsyuba S. Chromophores Supramolecular Organization in Polymer Materials with Quadratic Nonlinear-Optical Activity: Symmetry Aspects. Proceedings. 2018; 2(1):70. https://doi.org/10.3390/proceedings2010070 Chicago/Turabian Style Balakina, Marina, Olga Fominykh, Timur Burganov, Anastasiya Sharipova, and Sergey Katsyuba. 2018. "Chromophores Supramolecular Organization in Polymer Materials with Quadratic Nonlinear-Optical Activity: Symmetry Aspects" Proceedings 2, no. 1: 70. https://doi.org/10.3390/proceedings2010070 Find Other Styles Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here. Article Metrics No No Article Access Statistics Multiple requests from the same IP address are counted as one view.