Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni2+ in aqueous media

Abstract Highly selective and sensitive 2,7-naphthyridine based colorimetric and fluorescence “Turn Off” chemosensors (L1-L4) for detection of Ni2+ in aqueous media are reported. The receptors (L1-L4) showed a distinct color change from yellow to red by addition of Ni2+ with spectral changes in band...

Full description

Saved in:

Bibliographic Details
Main Authors:	Abida Ashraf, Muhammad Islam, Muhammad Khalid, Anthony P. Davis, Muhammad Tayyeb Ahsan, Muhammad Yaqub, Asad Syed, Abdallah M. Elgorban, Ali H. Bahkali, Zahid Shafiq
Format:	article
Language:	EN
Published:	Nature Portfolio 2021
Subjects:	Medicine R Science Q
Online Access:	https://doaj.org/article/908fc2417a2d46169c7ccc44bfab75b9
Tags:	Add Tag No Tags, Be the first to tag this record!

id	oai:doaj.org-article:908fc2417a2d46169c7ccc44bfab75b9
record_format	dspace
spelling	oai:doaj.org-article:908fc2417a2d46169c7ccc44bfab75b92021-12-02T17:37:23ZNaphthyridine derived colorimetric and fluorescent turn off sensors for Ni2+ in aqueous media10.1038/s41598-021-98400-22045-2322https://doaj.org/article/908fc2417a2d46169c7ccc44bfab75b92021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98400-2https://doaj.org/toc/2045-2322Abstract Highly selective and sensitive 2,7-naphthyridine based colorimetric and fluorescence “Turn Off” chemosensors (L1-L4) for detection of Ni2+ in aqueous media are reported. The receptors (L1-L4) showed a distinct color change from yellow to red by addition of Ni2+ with spectral changes in bands at 535–550 nm. The changes are reversible and pH independent. The detection limits for Ni2+ 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 Ni2+ (1.2 µM) in drinking water defined by EPA. The binding stoichiometries of L1-L4 for Ni2+ were found to be 2:1 through Job’s plot and ESI–MS analysis. Moreover the receptors can be used to quantify Ni2+ in real water samples. Formation of test strips by the dip-stick method increases the practical applicability of the Ni2+ 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).Abida AshrafMuhammad IslamMuhammad KhalidAnthony P. DavisMuhammad Tayyeb AhsanMuhammad YaqubAsad SyedAbdallah M. ElgorbanAli H. BahkaliZahid ShafiqNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Abida Ashraf Muhammad Islam Muhammad Khalid Anthony P. Davis Muhammad Tayyeb Ahsan Muhammad Yaqub Asad Syed Abdallah M. Elgorban Ali H. Bahkali Zahid Shafiq Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni2+ in aqueous media
description	Abstract Highly selective and sensitive 2,7-naphthyridine based colorimetric and fluorescence “Turn Off” chemosensors (L1-L4) for detection of Ni2+ in aqueous media are reported. The receptors (L1-L4) showed a distinct color change from yellow to red by addition of Ni2+ with spectral changes in bands at 535–550 nm. The changes are reversible and pH independent. The detection limits for Ni2+ 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 Ni2+ (1.2 µM) in drinking water defined by EPA. The binding stoichiometries of L1-L4 for Ni2+ were found to be 2:1 through Job’s plot and ESI–MS analysis. Moreover the receptors can be used to quantify Ni2+ in real water samples. Formation of test strips by the dip-stick method increases the practical applicability of the Ni2+ 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	article
author	Abida Ashraf Muhammad Islam Muhammad Khalid Anthony P. Davis Muhammad Tayyeb Ahsan Muhammad Yaqub Asad Syed Abdallah M. Elgorban Ali H. Bahkali Zahid Shafiq
author_facet	Abida Ashraf Muhammad Islam Muhammad Khalid Anthony P. Davis Muhammad Tayyeb Ahsan Muhammad Yaqub Asad Syed Abdallah M. Elgorban Ali H. Bahkali Zahid Shafiq
author_sort	Abida Ashraf
title	Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni2+ in aqueous media
title_short	Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni2+ in aqueous media
title_full	Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni2+ in aqueous media
title_fullStr	Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni2+ in aqueous media
title_full_unstemmed	Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni2+ in aqueous media
title_sort	naphthyridine derived colorimetric and fluorescent turn off sensors for ni2+ in aqueous media
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/908fc2417a2d46169c7ccc44bfab75b9
work_keys_str_mv	AT abidaashraf naphthyridinederivedcolorimetricandfluorescentturnoffsensorsforni2inaqueousmedia AT muhammadislam naphthyridinederivedcolorimetricandfluorescentturnoffsensorsforni2inaqueousmedia AT muhammadkhalid naphthyridinederivedcolorimetricandfluorescentturnoffsensorsforni2inaqueousmedia AT anthonypdavis naphthyridinederivedcolorimetricandfluorescentturnoffsensorsforni2inaqueousmedia AT muhammadtayyebahsan naphthyridinederivedcolorimetricandfluorescentturnoffsensorsforni2inaqueousmedia AT muhammadyaqub naphthyridinederivedcolorimetricandfluorescentturnoffsensorsforni2inaqueousmedia AT asadsyed naphthyridinederivedcolorimetricandfluorescentturnoffsensorsforni2inaqueousmedia AT abdallahmelgorban naphthyridinederivedcolorimetricandfluorescentturnoffsensorsforni2inaqueousmedia AT alihbahkali naphthyridinederivedcolorimetricandfluorescentturnoffsensorsforni2inaqueousmedia AT zahidshafiq naphthyridinederivedcolorimetricandfluorescentturnoffsensorsforni2inaqueousmedia
_version_	1718379895637147648

Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni2+ in aqueous media

Similar Items