Highly pH-responsive sensor based on amplified spontaneous emission coupled to colorimetry

We demonstrated a simple, directly-readable approach for high resolution pH sensing. The method was based on sharp changes in Amplified Spontaneous Emission (ASE) of a Stilbene 420 (ST) laser dye triggered by the pH-dependent absorption of Bromocresol Green (BG). The ASE threshold of BG:ST solution...

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Detalles Bibliográficos
Autores principales: Zhang, Qi, Castro Smirnov, Jose R., Xia, Ruidong, Pedrosa, Jose M., Rodriguez, Isabel, Cabanillas-Gonzalez, Juan, Huang, Wei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5384246/
https://www.ncbi.nlm.nih.gov/pubmed/28387354
http://dx.doi.org/10.1038/srep46265
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author Zhang, Qi
Castro Smirnov, Jose R.
Xia, Ruidong
Pedrosa, Jose M.
Rodriguez, Isabel
Cabanillas-Gonzalez, Juan
Huang, Wei
author_facet Zhang, Qi
Castro Smirnov, Jose R.
Xia, Ruidong
Pedrosa, Jose M.
Rodriguez, Isabel
Cabanillas-Gonzalez, Juan
Huang, Wei
author_sort Zhang, Qi
collection PubMed
description We demonstrated a simple, directly-readable approach for high resolution pH sensing. The method was based on sharp changes in Amplified Spontaneous Emission (ASE) of a Stilbene 420 (ST) laser dye triggered by the pH-dependent absorption of Bromocresol Green (BG). The ASE threshold of BG:ST solution mixtures exhibited a strong dependence on BG absorption, which was drastically changed by the variations of the pH of BG solution. As a result, ASE on-off or off-on was observed with different pH levels achieved by ammonia doping. By changing the concentration of the BG solution and the BG:ST blend ratio, this approach allowed to detect pH changes with a sensitivity down to 0.05 in the 10–11 pH range.
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spelling pubmed-53842462017-04-11 Highly pH-responsive sensor based on amplified spontaneous emission coupled to colorimetry Zhang, Qi Castro Smirnov, Jose R. Xia, Ruidong Pedrosa, Jose M. Rodriguez, Isabel Cabanillas-Gonzalez, Juan Huang, Wei Sci Rep Article We demonstrated a simple, directly-readable approach for high resolution pH sensing. The method was based on sharp changes in Amplified Spontaneous Emission (ASE) of a Stilbene 420 (ST) laser dye triggered by the pH-dependent absorption of Bromocresol Green (BG). The ASE threshold of BG:ST solution mixtures exhibited a strong dependence on BG absorption, which was drastically changed by the variations of the pH of BG solution. As a result, ASE on-off or off-on was observed with different pH levels achieved by ammonia doping. By changing the concentration of the BG solution and the BG:ST blend ratio, this approach allowed to detect pH changes with a sensitivity down to 0.05 in the 10–11 pH range. Nature Publishing Group 2017-04-07 /pmc/articles/PMC5384246/ /pubmed/28387354 http://dx.doi.org/10.1038/srep46265 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Zhang, Qi
Castro Smirnov, Jose R.
Xia, Ruidong
Pedrosa, Jose M.
Rodriguez, Isabel
Cabanillas-Gonzalez, Juan
Huang, Wei
Highly pH-responsive sensor based on amplified spontaneous emission coupled to colorimetry
title Highly pH-responsive sensor based on amplified spontaneous emission coupled to colorimetry
title_full Highly pH-responsive sensor based on amplified spontaneous emission coupled to colorimetry
title_fullStr Highly pH-responsive sensor based on amplified spontaneous emission coupled to colorimetry
title_full_unstemmed Highly pH-responsive sensor based on amplified spontaneous emission coupled to colorimetry
title_short Highly pH-responsive sensor based on amplified spontaneous emission coupled to colorimetry
title_sort highly ph-responsive sensor based on amplified spontaneous emission coupled to colorimetry
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5384246/
https://www.ncbi.nlm.nih.gov/pubmed/28387354
http://dx.doi.org/10.1038/srep46265
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