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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
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]
Total Authors: 10
Affiliation:
[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
Total Affiliations: 6
Document type: Journal article
Source: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY; v. 369, p. 70-76, JAN 15 2019.
Web of Science Citations: 4
Abstract

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)

FAPESP's process: 11/23587-1 - Polymeric structures with carbon nanotubes: laser processing, characterization and applications
Grantee:Adriano José Galvani Otuka
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 16/20886-1 - Ultrafast nonlinear optical spectroscopy: Transient Absorption and optical Kerr Gate with polarization control
Grantee:Leonardo De Boni
Support type: Regular Research Grants