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https://hdl.handle.net/1822/57325
Título: | Arylthienyl-vinyl-benzothiazoles as efficient second harmonic generators (SHG) for nonlinear optics |
Autor(es): | Batista, Rosa Maria Ferreira Costa, Susana P. G. Belsley, M. Raposo, M. Manuela M. |
Palavras-chave: | Benzothiazole Nonlinear optics Second Harmonic Generators Thiophene |
Data: | 2018 |
Editora: | MDPI AG |
Citação: | 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 of the 22nd International Electronic Conference on Synthetic Organic Chemistry, Sciforum Electronic Conferences Series, doi: 10.3390/ecsoc-22-05702. |
Resumo(s): | 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 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 ºC). The good balance between nonlinearity and thermal stability makes this compound a promising candidate as second harmonic generators (SHG) for nonlinear optics. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/57325 |
DOI: | 10.3390/ecsoc-22-05702 |
Versão da editora: | https://sciforum.net/manuscripts/5702/manuscript.pdf |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDQuim - Comunicações e Proceedings |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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ECSOC-2018 proceeding.pdf | 468,99 kB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons