Development of Fluorescent Sensors for Biorelevant Anions in Aqueous Media Using Positively Charged Quantum Dots
Quantum dots (QDs) have captured the attention of the scientific community due to their unique optical and electronic properties, leading to extensive research for different applications. They have also been employed as sensors for ionic species owing to their sensing properties. Detecting anionic s...
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2024
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ftdoajarticles:oai:doaj.org/article:6b3bf743315641c9a0be1fd743a9dde4 2024-09-15T18:28:14+00:00 Development of Fluorescent Sensors for Biorelevant Anions in Aqueous Media Using Positively Charged Quantum Dots Hitalo J. B. Silva Claudete F. Pereira Goreti Pereira Giovannia A. L. Pereira 2024-03-01T00:00:00Z https://doi.org/10.3390/mi15030373 https://doaj.org/article/6b3bf743315641c9a0be1fd743a9dde4 EN eng MDPI AG https://www.mdpi.com/2072-666X/15/3/373 https://doaj.org/toc/2072-666X doi:10.3390/mi15030373 2072-666X https://doaj.org/article/6b3bf743315641c9a0be1fd743a9dde4 Micromachines, Vol 15, Iss 3, p 373 (2024) semiconductor nanocrystals detection bicarbonate carbonate sulfate bisulfate Mechanical engineering and machinery TJ1-1570 article 2024 ftdoajarticles https://doi.org/10.3390/mi15030373 2024-08-05T17:49:44Z Quantum dots (QDs) have captured the attention of the scientific community due to their unique optical and electronic properties, leading to extensive research for different applications. They have also been employed as sensors for ionic species owing to their sensing properties. Detecting anionic species in an aqueous medium is a challenge because the polar nature of water weakens the interactions between sensors and ions. The anions bicarbonate (HCO 3 − ), carbonate (CO 3 2− ), sulfate (SO 4 2− ), and bisulfate (HSO 4 − ) play a crucial role in various physiological, environmental, and industrial processes, influencing the regulation of biological fluids, ocean acidification, and corrosion processes. Therefore, it is necessary to develop approaches capable of detecting these anions with high sensitivity. This study utilized CdTe QDs stabilized with cysteamine (CdTe-CYA) as a fluorescent sensor for these anions. The QDs exhibited favorable optical properties and high photostability. The results revealed a gradual increase in the QDs’ emission intensity with successive anion additions, indicating the sensitivity of CdTe-CYA to the anions. The sensor also exhibited selectivity toward the target ions, with good limits of detection (LODs) and quantification (LOQs). Thus, CdTe-CYA QDs show potential as fluorescent sensors for monitoring the target anions in water sources. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Micromachines 15 3 373 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
topic |
semiconductor nanocrystals detection bicarbonate carbonate sulfate bisulfate Mechanical engineering and machinery TJ1-1570 |
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semiconductor nanocrystals detection bicarbonate carbonate sulfate bisulfate Mechanical engineering and machinery TJ1-1570 Hitalo J. B. Silva Claudete F. Pereira Goreti Pereira Giovannia A. L. Pereira Development of Fluorescent Sensors for Biorelevant Anions in Aqueous Media Using Positively Charged Quantum Dots |
topic_facet |
semiconductor nanocrystals detection bicarbonate carbonate sulfate bisulfate Mechanical engineering and machinery TJ1-1570 |
description |
Quantum dots (QDs) have captured the attention of the scientific community due to their unique optical and electronic properties, leading to extensive research for different applications. They have also been employed as sensors for ionic species owing to their sensing properties. Detecting anionic species in an aqueous medium is a challenge because the polar nature of water weakens the interactions between sensors and ions. The anions bicarbonate (HCO 3 − ), carbonate (CO 3 2− ), sulfate (SO 4 2− ), and bisulfate (HSO 4 − ) play a crucial role in various physiological, environmental, and industrial processes, influencing the regulation of biological fluids, ocean acidification, and corrosion processes. Therefore, it is necessary to develop approaches capable of detecting these anions with high sensitivity. This study utilized CdTe QDs stabilized with cysteamine (CdTe-CYA) as a fluorescent sensor for these anions. The QDs exhibited favorable optical properties and high photostability. The results revealed a gradual increase in the QDs’ emission intensity with successive anion additions, indicating the sensitivity of CdTe-CYA to the anions. The sensor also exhibited selectivity toward the target ions, with good limits of detection (LODs) and quantification (LOQs). Thus, CdTe-CYA QDs show potential as fluorescent sensors for monitoring the target anions in water sources. |
format |
Article in Journal/Newspaper |
author |
Hitalo J. B. Silva Claudete F. Pereira Goreti Pereira Giovannia A. L. Pereira |
author_facet |
Hitalo J. B. Silva Claudete F. Pereira Goreti Pereira Giovannia A. L. Pereira |
author_sort |
Hitalo J. B. Silva |
title |
Development of Fluorescent Sensors for Biorelevant Anions in Aqueous Media Using Positively Charged Quantum Dots |
title_short |
Development of Fluorescent Sensors for Biorelevant Anions in Aqueous Media Using Positively Charged Quantum Dots |
title_full |
Development of Fluorescent Sensors for Biorelevant Anions in Aqueous Media Using Positively Charged Quantum Dots |
title_fullStr |
Development of Fluorescent Sensors for Biorelevant Anions in Aqueous Media Using Positively Charged Quantum Dots |
title_full_unstemmed |
Development of Fluorescent Sensors for Biorelevant Anions in Aqueous Media Using Positively Charged Quantum Dots |
title_sort |
development of fluorescent sensors for biorelevant anions in aqueous media using positively charged quantum dots |
publisher |
MDPI AG |
publishDate |
2024 |
url |
https://doi.org/10.3390/mi15030373 https://doaj.org/article/6b3bf743315641c9a0be1fd743a9dde4 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Micromachines, Vol 15, Iss 3, p 373 (2024) |
op_relation |
https://www.mdpi.com/2072-666X/15/3/373 https://doaj.org/toc/2072-666X doi:10.3390/mi15030373 2072-666X https://doaj.org/article/6b3bf743315641c9a0be1fd743a9dde4 |
op_doi |
https://doi.org/10.3390/mi15030373 |
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Micromachines |
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15 |
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373 |
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1810469575359201280 |