Crosslinkable organic glasses with quadratic nonlinear optical activity |
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| Affiliation: | 1. Dipartimento di Chimica, Università degli Studi di Napoli “Federico II”, Via Cinthia, 80126 Napoli, Italy;2. IPCMS, UMR CNRS-ULP 7504, 23 Rue du Loess, BP 43, 67034 Strasbourg Cedex, France;1. NanoTecCenter Weiz Forschungsgesellschaft mbH, Franz-Pichler-Straße 32, A-8160, Weiz, Austria;2. Max-Planck-Institut für Polymerforschung, Ackermannweg 10, D-55128, Mainz, Germany;3. Institut für Physik, Institut für Chemie & IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 6, D-12489, Berlin, Germany;4. Helmholtz Zentrum Berlin für Materialien und Energie GmbH, Elektronenspeicherring BESSY II, Albert-Einstein-Str. 15, D-12489, Berlin, Germany;1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, PR China;2. Henan Key Laboratory of Biomolecular Recognition and Sensing,School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, PR China;1. Research Group for Advanced Materials & Sustainable Catalysis (AMSC), Research Center for Clay Minerals, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Institute of Industrial Catalysis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China;2. Centre for Future Materials, University of Southern Queensland, Toowoomba, Queensland 4350, Australia;3. Dipartimento di Chimica, Università di Napoli “Federico II”, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy;4. Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, St. Lucia, QLD 4072, Australia;1. National Key Laboratory of Polymer and Composite Materials, Ho Chi Minh City University of Technology, Vietnam National University–Ho Chi Minh City (VNU–HCM), 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Viet Nam;2. Faculty of Materials Technology, Ho Chi Minh City University of Technology, Vietnam National University, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Viet Nam;3. Institute of Propellants and Explosives, General Department of Defense Industry, 192 Duc Giang, Long Bien District, Ha Noi City, Viet Nam |
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| Abstract: | In this paper, the use of a pure benzimidazole based dimethacrylic push–pull chromophore has been investigated for the preparation of thin films exhibiting quadratic nonlinear optical (NLO) properties. To stabilize these NLO properties, the chromophore orientation has been frozen in a noncentrosymmetric arrangement by cross-linking the material using thermal polymerization induced by suitable initiators. The films present a very stable quadratic optical activity up to T = 152 °C with SHG coefficient d33 of 14 pm/V measured at 1.9 μm. |
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