id RepoTEC9736
recordtype dspace
spelling 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
collection Repositorio TEC
language Inglés
topic Revestimientos
Propiedades ópticas
Sensibilidad
Ácidez
Research Subject Categories::NATURAL SCIENCES::Chemistry::Physical chemistry::Chemical physics
spellingShingle 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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score 12.140644