Effect of two methoxy groups bound to an amino-benzene donor unit for thienyl-di-vinylene bridged EO chromophores
| Autor: | Toshiki Yamada, Isao Aoki, Hideki Miki, Akira Otomo |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Hydrogen bond
Stereochemistry Organic Chemistry Hyperpolarizability Chromophore Medicinal chemistry Acceptor Atomic and Molecular Physics and Optics Spectral line Electronic Optical and Magnetic Materials Inorganic Chemistry chemistry.chemical_compound chemistry Proton NMR Electrical and Electronic Engineering Physical and Theoretical Chemistry Absorption (chemistry) Benzene Spectroscopy |
| Zdroj: | Optical Materials. 35:2194-2200 |
| ISSN: | 0925-3467 |
| Popis: | We report the molecular first hyperpolarizability (β) and absorption and 1H NMR spectra of electro-optic (EO) chromophores comprised of amino-benzene with two methoxy groups at meta-positions as the donor units, thienyl-di-vinylene as the π-electron bridges, and 2-(dicyanomethylene)-3-cyano-4,5,5-trimethyl-2,5-dihydrofuran (TCF), 2-(dicyanomethylene)-3-cyano-4,5-dimethyl-5-trifluoromethyl-2,5-dihydrofuran (CF3-TCF) or 2-(dicyanomethylene)-3-cyano-4-methyl-5-phenyl-5-trifluoromethyl-2,5-dihydrofuran (CF3-phenyl-TCF) as the acceptor units. Improvement in linear and nonlinear optical properties was found in EO chromophores with two methoxy groups compared with benchmark EO chromophores without these groups and EO chromophores with one methoxy group. The data obtained from measurements of hyperpolarizability (β) and absorption and 1H NMR spectra indicate a possible mechanism that can contribute to improvement – double intra-molecular hydrogen bonding. |
| Databáze: | OpenAIRE |
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