Bromo-and chloro-derivatives of dibenzylideneacetone: experimental and theoretical study of the first molecular hyperpolarizability and two-photon absorption.
SANTOS, Francisco A.; ABEGÃO, Luis M. G.; FONSECA, Ruben D.; ALCÂNTARA, Aline M.; MENDONÇA, Cleber Renato; VALLE, Marcelo S.; ALENCAR, M. A. R. C.; KAMADA, Kenji; DE BONI, Leonardo; RODRIGUES JUNIOR, J. J.
SANTOS, Francisco A.; ABEGÃO, Luis M. G.; FONSECA, Ruben D.; ALCÂNTARA, Aline M.; MENDONÇA, Cleber Renato; VALLE, Marcelo S.; ALENCAR, M. A. R. C.; KAMADA, Kenji; DE BONI, Leonardo; RODRIGUES JUNIOR, J. J.
 Abstract: This work reports the study of the second- and third-order nonlinear optical properties of two dibenzylideneacetone derivatives: (1E,4E)-1,5-bis(4-bromophenyl)penta-1,4-dien-3-one (4-DBDBA) and (1E,4E)-1,5-bis(4-chlorophenyl)penta-1,4-dien-3-one (4-DCDBA) in dichloromethane solution. The nonlinear optical properties investigated were the first molecular hyperpolarizability and the two-photon absorption (2PA) cross-section by using the hyper-Rayleigh scattering (HRS) and Z-scan techniques respectively. The values of the first molecular hyperpolarizability obtained by HRS (ßHRS) were 25 × 10 -30 cm4 statvolt-1 for 4-DBDBA whereas for 4-DCDBA was 27 × 10 -30 cm4 statvolt-1. The peak value for 2PA cross-section by the spectral measurement was around for 4-DBDBA and for 4-DCDBA. In addition, quantum chemical calculations were performed to support the interpretation from experimental results. | |
| Journal of Photochemistry and Photobiology A |
| v. 369, p. 70-76 - Ano: 2019 |
| Fator de Impacto: 2,891 |
| http://dx.doi.org/10.1016/j.jphotochem.2018.10.012 |  @article={002908509,author = {SANTOS, Francisco A.; ABEGÃO, Luis M. G.; FONSECA, Ruben D.; ALCÂNTARA, Aline M.; MENDONÇA, Cleber Renato; VALLE, Marcelo S.; ALENCAR, M. A. R. C.; KAMADA, Kenji; DE BONI, Leonardo; RODRIGUES JUNIOR, J. J.},title={Bromo-and chloro-derivatives of dibenzylideneacetone: experimental and theoretical study of the first molecular hyperpolarizability and two-photon absorption},journal={Journal of Photochemistry and Photobiology A},note={v. 369, p. 70-76},year={2019}} |