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

Qi Zhang; Jose R. Castro Smirnov; Ruidong Xia; Jose M. Pedrosa; Isabel Rodriguez; Juan Cabanillas-Gonzalez; Wei Huang

doi:10.1038/srep46265

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

Qi Zhang, Jose R. Castro Smirnov, Ruidong Xia, Jose M. Pedrosa, Isabel Rodriguez, Juan Cabanillas-Gonzalez, Wei Huang

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

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.

Original language	English
Article number	46265
Journal	Scientific Reports
Volume	7
DOIs	https://doi.org/10.1038/srep46265
State	Published - 7 Apr 2017
Externally published	Yes

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title = "Highly pH-responsive sensor based on amplified spontaneous emission coupled to colorimetry",

abstract = "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.",

author = "Qi Zhang and {Castro Smirnov}, {Jose R.} and Ruidong Xia and Pedrosa, {Jose M.} and Isabel Rodriguez and Juan Cabanillas-Gonzalez and Wei Huang",

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doi = "10.1038/srep46265",

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T1 - Highly pH-responsive sensor based on amplified spontaneous emission coupled to colorimetry

AU - Zhang, Qi

AU - Castro Smirnov, Jose R.

AU - Xia, Ruidong

AU - Pedrosa, Jose M.

AU - Rodriguez, Isabel

AU - Cabanillas-Gonzalez, Juan

AU - Huang, Wei

PY - 2017/4/7

Y1 - 2017/4/7

N2 - 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.

AB - 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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JO - Scientific Reports

JF - Scientific Reports

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

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