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Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni(2+) in aqueous media
Highly selective and sensitive 2,7-naphthyridine based colorimetric and fluorescence “Turn Off” chemosensors (L1-L4) for detection of Ni(2+) in aqueous media are reported. The receptors (L1-L4) showed a distinct color change from yellow to red by addition of Ni(2+) with spectral changes in bands at...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8479070/ https://www.ncbi.nlm.nih.gov/pubmed/34584124 http://dx.doi.org/10.1038/s41598-021-98400-2 |
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author | Ashraf, Abida Islam, Muhammad Khalid, Muhammad Davis, Anthony P. Ahsan, Muhammad Tayyeb Yaqub, Muhammad Syed, Asad Elgorban, Abdallah M. Bahkali, Ali H. Shafiq, Zahid |
author_facet | Ashraf, Abida Islam, Muhammad Khalid, Muhammad Davis, Anthony P. Ahsan, Muhammad Tayyeb Yaqub, Muhammad Syed, Asad Elgorban, Abdallah M. Bahkali, Ali H. Shafiq, Zahid |
author_sort | Ashraf, Abida |
collection | PubMed |
description | Highly selective and sensitive 2,7-naphthyridine based colorimetric and fluorescence “Turn Off” chemosensors (L1-L4) for detection of Ni(2+) in aqueous media are reported. The receptors (L1-L4) showed a distinct color change from yellow to red by addition of Ni(2+) with spectral changes in bands at 535–550 nm. The changes are reversible and pH independent. The detection limits for Ni(2+) by (L1-L4) are in the range of 0.2–0.5 µM by UV–Visible data and 0.040–0.47 µM by fluorescence data, which is lower than the permissible value of Ni(2+) (1.2 µM) in drinking water defined by EPA. The binding stoichiometries of L1-L4 for Ni(2+) were found to be 2:1 through Job’s plot and ESI–MS analysis. Moreover the receptors can be used to quantify Ni(2+) in real water samples. Formation of test strips by the dip-stick method increases the practical applicability of the Ni(2+) test for “in-the-field” measurements. DFT calculations and AIM analyses supported the experimentally determined 2:1 stoichiometries of complexation. TD-DFT calculations were performed which showed slightly decreased FMO energy gaps due to ligand–metal charge transfer (LMCT). |
format | Online Article Text |
id | pubmed-8479070 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-84790702021-09-30 Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni(2+) in aqueous media Ashraf, Abida Islam, Muhammad Khalid, Muhammad Davis, Anthony P. Ahsan, Muhammad Tayyeb Yaqub, Muhammad Syed, Asad Elgorban, Abdallah M. Bahkali, Ali H. Shafiq, Zahid Sci Rep Article Highly selective and sensitive 2,7-naphthyridine based colorimetric and fluorescence “Turn Off” chemosensors (L1-L4) for detection of Ni(2+) in aqueous media are reported. The receptors (L1-L4) showed a distinct color change from yellow to red by addition of Ni(2+) with spectral changes in bands at 535–550 nm. The changes are reversible and pH independent. The detection limits for Ni(2+) by (L1-L4) are in the range of 0.2–0.5 µM by UV–Visible data and 0.040–0.47 µM by fluorescence data, which is lower than the permissible value of Ni(2+) (1.2 µM) in drinking water defined by EPA. The binding stoichiometries of L1-L4 for Ni(2+) were found to be 2:1 through Job’s plot and ESI–MS analysis. Moreover the receptors can be used to quantify Ni(2+) in real water samples. Formation of test strips by the dip-stick method increases the practical applicability of the Ni(2+) test for “in-the-field” measurements. DFT calculations and AIM analyses supported the experimentally determined 2:1 stoichiometries of complexation. TD-DFT calculations were performed which showed slightly decreased FMO energy gaps due to ligand–metal charge transfer (LMCT). Nature Publishing Group UK 2021-09-28 /pmc/articles/PMC8479070/ /pubmed/34584124 http://dx.doi.org/10.1038/s41598-021-98400-2 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Ashraf, Abida Islam, Muhammad Khalid, Muhammad Davis, Anthony P. Ahsan, Muhammad Tayyeb Yaqub, Muhammad Syed, Asad Elgorban, Abdallah M. Bahkali, Ali H. Shafiq, Zahid Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni(2+) in aqueous media |
title | Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni(2+) in aqueous media |
title_full | Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni(2+) in aqueous media |
title_fullStr | Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni(2+) in aqueous media |
title_full_unstemmed | Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni(2+) in aqueous media |
title_short | Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni(2+) in aqueous media |
title_sort | naphthyridine derived colorimetric and fluorescent turn off sensors for ni(2+) in aqueous media |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8479070/ https://www.ncbi.nlm.nih.gov/pubmed/34584124 http://dx.doi.org/10.1038/s41598-021-98400-2 |
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