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Proceeding Paper

Arylthienyl-vinyl-benzothiazoles as Efficient Second Harmonic Generators (SHG) for Nonlinear Optics †

by
Rosa M. F. Batista
1,2,
Susana P. G. Costa
1,
Michael Belsley
2 and
M. Manuela M. Raposo
1,*
1
Center of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
2
Physics Centers of the Universities of Minho and Porto, Campus de Gualtar, 4710-057 Braga, Portugal
*
Author to whom correspondence should be addressed.
†
Presented at the 22nd International Electronic Conference on Synthetic Organic Chemistry, 15 November– 15 December 2018; Available Online: https://sciforum.net/conference/ecsoc-22.
Proceedings 2019, 9(1), 4; https://doi.org/10.3390/ecsoc-22-05702
Published: 14 November 2018
(This article belongs to the Proceedings of 22nd International Electronic Conference on Synthetic Organic Chemistry)
Versions Notes

Abstract

New push-pull second harmonic generation (SHG) chromophores 2 were synthesized in order to study their linear and nonlinear optical properties. The donor-acceptor π-conjugated systems 2 were prepared in good to excellent yields by a simple aldol-type condensation of the precursor aldehydes 1 with 6-nitro-2-methyl-1,3-benzothiazole in the presence of NaOH. Hyper-Rayleigh scattering in dioxane solutions was used to evaluate their second-order nonlinear optical properties. The experimental results showed that the optical (linear and nonlinear) properties are influenced by the electron-donor strength of the groups of the π-conjugated bridge. The vinyl-benzothiazole derivative 2b, with methoxyl as the donor group, exhibited the largest first hyperpolarizability β (1660 × 10−30 esu, 40 times greater than the standard reference pNA molecule) and the highest decomposition temperature (Td = 360 °C). The good balance between nonlinearity and thermal stability makes this compound a promising candidate as second harmonic generator (SHG) for nonlinear optics.
Keywords: synthesis; benzothiazole; thiophene; thermal stability; second harmonic generators (SHG) synthesis; benzothiazole; thiophene; thermal stability; second harmonic generators (SHG)

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MDPI and ACS Style

Batista, R.M.F.; Costa, S.P.G.; Belsley, M.; Raposo, M.M.M. Arylthienyl-vinyl-benzothiazoles as Efficient Second Harmonic Generators (SHG) for Nonlinear Optics. Proceedings 2019, 9, 4. https://doi.org/10.3390/ecsoc-22-05702

AMA Style

Batista RMF, Costa SPG, Belsley M, Raposo MMM. Arylthienyl-vinyl-benzothiazoles as Efficient Second Harmonic Generators (SHG) for Nonlinear Optics. Proceedings. 2019; 9(1):4. https://doi.org/10.3390/ecsoc-22-05702

Chicago/Turabian Style

Batista, Rosa M. F., Susana P. G. Costa, Michael Belsley, and M. Manuela M. Raposo. 2019. "Arylthienyl-vinyl-benzothiazoles as Efficient Second Harmonic Generators (SHG) for Nonlinear Optics" Proceedings 9, no. 1: 4. https://doi.org/10.3390/ecsoc-22-05702

APA Style

Batista, R. M. F., Costa, S. P. G., Belsley, M., & Raposo, M. M. M. (2019). Arylthienyl-vinyl-benzothiazoles as Efficient Second Harmonic Generators (SHG) for Nonlinear Optics. Proceedings, 9(1), 4. https://doi.org/10.3390/ecsoc-22-05702

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