Comparative study of the optical behavior of a porphyrin encapsulated in sol-gel silica coatings and in solution as a function of pH
Artículo científico
Autores Principales: | Carmona, Noemi, Villegas, María Ángeles, García, Miguel, Llopis, José, Montero-Zeledón, Ernesto |
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Idioma: | Inglés |
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Elsevier
2018
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https://www.scopus.com/inward/record.uri?eid=2-s2.0-84996992986&doi=10.1016%2fj.matchemphys.2016.07.038&partnerID=40&md5=c69b883b0603057040a949306a159e17 https://hdl.handle.net/2238/9736 |
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RepoTEC97362022-04-09T03:05:37Z Comparative study of the optical behavior of a porphyrin encapsulated in sol-gel silica coatings and in solution as a function of pH Carmona, Noemi Villegas, María Ángeles García, Miguel Llopis, José Montero-Zeledón, Ernesto Revestimientos Propiedades ópticas Sensibilidad Ácidez Research Subject Categories::NATURAL SCIENCES::Chemistry::Physical chemistry::Chemical physics Artículo científico We report a comparative optical spectral study as a function of pH on a porphyrin encapsulated in a solgel matrix and in methanol solution. Its response has been discussed in terms of pH-sensitivity as a function of the coatings thickness. Comparison with the behavior of such porphyrin in methanol solution is also included. Optical properties of the porphyrin doped coatings show a quasi linear behavior throughout the pH range studied. Luminescent emission of doped coatings has its maximum peak at a slightly lower wavelength compared with the response in liquid medium (methanol solution), while in the excitation spectra no clear tendency was observed for different pH. Coatings doped with 1 wt% porphyrin fulfill Lambert-Beer law, although the molar absorptivity of the encapsulated porphyrin in the coatings is slightly lower than in methanol solution. 2018-05-28T16:37:35Z 2018-05-28T16:37:35Z 2016 info:eu-repo/semantics/article https://www.scopus.com/inward/record.uri?eid=2-s2.0-84996992986&doi=10.1016%2fj.matchemphys.2016.07.038&partnerID=40&md5=c69b883b0603057040a949306a159e17 Carmona, N., Villegas, M., Montero, E., García, M., & Llopis, J. (2016). Comparative study of the optical behavior of a porphyrin encapsulated in sol-gel silica coatings and in solution as a function of pH. Elsevier, 182(1), 315-323. 2540584 https://hdl.handle.net/2238/9736 eng 10.1016/j.matchemphys.2016.07.038 application/pdf Elsevier Elsevier |
institution |
Tecnológico de Costa Rica |
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Repositorio TEC |
language |
Inglés |
topic |
Revestimientos Propiedades ópticas Sensibilidad Ácidez Research Subject Categories::NATURAL SCIENCES::Chemistry::Physical chemistry::Chemical physics |
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Revestimientos Propiedades ópticas Sensibilidad Ácidez Research Subject Categories::NATURAL SCIENCES::Chemistry::Physical chemistry::Chemical physics Carmona, Noemi Villegas, María Ángeles García, Miguel Llopis, José Montero-Zeledón, Ernesto Comparative study of the optical behavior of a porphyrin encapsulated in sol-gel silica coatings and in solution as a function of pH |
description |
Artículo científico |
format |
Artículo |
author |
Carmona, Noemi Villegas, María Ángeles García, Miguel Llopis, José Montero-Zeledón, Ernesto |
author_sort |
Carmona, Noemi |
title |
Comparative study of the optical behavior of a porphyrin encapsulated in sol-gel silica coatings and in solution as a function of pH |
title_short |
Comparative study of the optical behavior of a porphyrin encapsulated in sol-gel silica coatings and in solution as a function of pH |
title_full |
Comparative study of the optical behavior of a porphyrin encapsulated in sol-gel silica coatings and in solution as a function of pH |
title_fullStr |
Comparative study of the optical behavior of a porphyrin encapsulated in sol-gel silica coatings and in solution as a function of pH |
title_full_unstemmed |
Comparative study of the optical behavior of a porphyrin encapsulated in sol-gel silica coatings and in solution as a function of pH |
title_sort |
comparative study of the optical behavior of a porphyrin encapsulated in sol-gel silica coatings and in solution as a function of ph |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84996992986&doi=10.1016%2fj.matchemphys.2016.07.038&partnerID=40&md5=c69b883b0603057040a949306a159e17 https://hdl.handle.net/2238/9736 |
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1785817759540576256 |
score |
12.140644 |