Bromo-and chloro-derivatives of dibenzylideneacetone: Experimental and theoretical study of the first molecular hyperpolarizability and two-photon absorption

Autor(es)

Santos, Francisco A. ^[1] ; Abegao, Luis M. G. ^{[1, 2]} ; Fonseca, Ruben D. ^{[3, 4]} ; Alcantara, Aline M. ^[5] ; Mendonca, Cleber R. ^[3] ; Valle, Marcelo S. ^[5] ; Alencar, M. A. R. C. ^[1] ; Kamada, Kenji ^[6] ; De Boni, Leonardo ^[3] ; Rodrigues, Jr., J. J. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sergipe, Dept Fis, BR-49100000 Sao Cristovao, SE - Brazil

^[2] Yale Univ, Dept Radiol & Biomed Imaging, 330 Cedar St, New Haven, CT 06520 - USA

^[3] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[4] Univ Popular Cesar, Dept Fis, Valledupar 2000004, Cesar - Colombia

^[5] Univ Fed Sao Joao Del Rei, Dept Ciencias Nat, BR-36301160 Sao Joao Del Rei, MG - Brazil

^[6] Natl Inst Adv Ind Sci & Technol, IFMRI, Ikeda, Osaka 5638577 - Japan

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY; v. 369, p. 70-76, JAN 15 2019.
• Citações Web of Science: 4

Resumo

This work reports the study of the second- and third-order nonlinear optical properties of two dibenzylide-neacetone 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 (beta(HRS)) were 25 x 10(-30) cm(4) statvolt(-1) for 4-DBDBA whereas for 4-DCDBA was 27 x 10(-3) cm(4) statvolt(-1). The peak value for 2PA cross-section by the spectral measurement was around 24 GM for 4-DBDBA and 17 GM for 4-DCDBA. In addition, quantum chemical calculations were performed to support the interpretation from experimental results.RS (AU)

• Processo FAPESP: 16/20886-1 - Modernização da linha de Espectroscopia Óptica Não Linear ultrarrápida: Absorção transiente e chave kerr óptica com controle da polarização.
• Beneficiário: Leonardo de Boni
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/23587-1 - Estruturas poliméricas com nanotubos de carbono: processamento a laser, caracterização e aplicações
• Beneficiário: Adriano José Galvani Otuka
• Modalidade de apoio: Bolsas no Brasil - Doutorado