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Concise Multigram‐Scale Synthesis of Push–Pull Tricyanofuran‐Based Hemicyanines with Giant Second‐Order Nonlinearity: An Alternative for Electro‐optic Materials |
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| Authors: | Dr Wissam Bentoumi Jean‐Christophe Mulatier Dr Pierre‐Antoine Bouit Dr Olivier Maury Dr Alberto Barsella Dr Jean‐Pierre Vola Evelyne Chastaing Laurent Divay Françoise Soyer Dr Pierre Le Barny Dr Yann Bretonnière Dr Chantal Andraud |
| Institution: | 1. Laboratoire de Chimie de l'ENS de Lyon, CNRS UMR 5182, Université Lyon I, ENS de Lyon, 46, allée d'Italie, 69364 Lyon cedex 7 (France), Fax: (+33)?4‐72‐72‐88‐60;2. Institut de Physique et Chimie des Matériaux de Strasbourg, CNRS UMR 7504, Université de Strasbourg, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2 (France);3. Laboratoire de Chimie des Matériaux Organiques, Thales Research and Technology‐France, Campus Polytechnique, 1 Avenue Augustin Fresnel, 91767 Palaiseau (France) |
| Abstract: | Highly stable and highly soluble push–pull heptamethine hemicyanines based on the tricyanofuran electron‐accepting group can be prepared on a 15 g scale. The compounds display giant second‐order nonlinear figure of merit, μβ of up to 31 000×10?48 esu, and lead to a poled material with a second‐order nonlinear response, r33 of 90 pm V?1 at 1.06 μm |
| Keywords: | chromophores electro‐optic materials nonlinear optics push– pull systems |