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Synthesis and nonlinear optical properties of chromophores for photorefractive polymer materials |
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| Authors: | Enrique Font-Sanchis Ángela Sastre-Santos Jesús Orduna Fernando Fernández-Lázaro |
| Institution: | a División de Química Orgánica, Instituto de Bioingeniería, Universidad Miguel Hernández, Elche 03202 (Alicante), Spain b Departamento de Física de la Materia Condensada, ICMA, Universidad de Zaragoza-CSIC, Zaragoza 50009, Spain c Departamento de Química Orgánica, ICMA, Universidad de Zaragoza-CSIC, Zaragoza 50009, Spain |
| Abstract: | The synthesis and nonlinear optical (NLO) properties of a series of nitrostilbene-, dinitrostilbene-, and dicyanomethylenedihydrofuran-based chromophores potentially useful in photorefractive multifunctional polymers are reported. Electronic absorption spectra have been measured in different solvents. Electric field induced second harmonic (EFISH) generation results show that the 2-dicyanomethylen-3-cyano-5,5-dimethyl-2,5-dihydrofuran moieties lead to the best NLO performances. Dinitrophenyl-based chromophores have shown a reduced nonlinear response as compared with the mononitro analogues. Nonlinear optical properties of a selected nitro-dinitro couple have been also determined theoretically. |
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