| Texto completo | |
| Autor(es): |
Caicedo, Mauricio
;
Echeverry, Carlos A.
;
Guimaraes, Robson R.
;
Ortiz, Alejandro
;
Araki, Koiti
;
Insuasty, Braulio
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Molecular Structure; v. 1133, p. 8-pg., 2017-04-05. |
| Resumo | |
In this work, we present the synthesis of novel donor-acceptor compounds based on 3-methylquinoxaline-2(1H)one which follow an easy synthetic route, involving Knoevenagel reaction with electron-donor groups such as N,N-dimethylaminobenzene, ferrocene, triphenylamine (TPA) and ((E)-4,4'-(ethene-1,2-diyl) bis (N,N-diphenylaniline). Additionally, the optical properties were measured by means of the absorption and emission spectroscopy suggesting a push-pull behavior which was further confirmed by electrochemical experiments. Finally, the quinoxaline-2(1H)one fragment not only bestow wide absorption, but also can chelate to titanium ions on the TiO2 surface, allowing a strong electron coupling between the excited-state energy level of the dyes and the conduction band of TiO2. (C) 2016 Elsevier B.V. All rights reserved. (AU) | |
| Processo FAPESP: | 13/24725-4 - Química supramolecular e nanotecnologia |
| Beneficiário: | Henrique Eisi Toma |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |