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Sequential Fluorescence Recognition of Molybdenum(VI), Arsenite, and Phosphate Ions in a Ratiometric Manner: A Facile Approach for Discrimination of AsO(2)(–) and H(2)PO(4)(–)

[Image: see text] An amide-based smart probe (L) is explored for nanomolar detection of Mo(VI) ion in a ratiometric manner, involving hydrogen-bond-assisted chelation-enhanced fluorescence process through inhibition of photoinduced electron transfer process. The recognition of Mo(VI) is associated w...

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Autores principales: Banerjee, Mahuya, Ta, Sabyasachi, Ghosh, Milan, Ghosh, Avijit, Das, Debasis
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648501/
https://www.ncbi.nlm.nih.gov/pubmed/31460185
http://dx.doi.org/10.1021/acsomega.9b00377
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author Banerjee, Mahuya
Ta, Sabyasachi
Ghosh, Milan
Ghosh, Avijit
Das, Debasis
author_facet Banerjee, Mahuya
Ta, Sabyasachi
Ghosh, Milan
Ghosh, Avijit
Das, Debasis
author_sort Banerjee, Mahuya
collection PubMed
description [Image: see text] An amide-based smart probe (L) is explored for nanomolar detection of Mo(VI) ion in a ratiometric manner, involving hydrogen-bond-assisted chelation-enhanced fluorescence process through inhibition of photoinduced electron transfer process. The recognition of Mo(VI) is associated with a 17-fold fluorescence enhancement and confirmed by single-crystal X-ray diffraction of the resulting Mo(VI) complex (M1). Further, M1 selectively recognizes arsenite through green emission of their adduct (C1) with an 81-fold fluorescence enhancement. Interestingly, dihydrogen phosphate causes dissociation of C1 back to free L having weak fluorescence. The methods are fast, highly selective, and allow their bare eye visualization at physiological pH. All of the interactions have been substantiated by time-dependent density functional theory calculations to rationalize their spectroscopic properties. The corresponding lowest detection limits are 1.5 × 10(–8) M for Mo(VI), 1.2 × 10(–10) M for AsO(2)(–), and 3.2 × 10(–6) M for H(2)PO(4)(–), whereas the respective association constants are 4.21 × 10(5) M(–1) for Mo(VI), 6.49 × 10(4) M(–1) for AsO(2)(–), and 2.11 × 10(5) M(–1) for H(2)PO(4)(–). The L is useful for efficient enrichment of Mo(VI) from aqueous solution, while M1 efficiently removes AsO(2)(–) from environmental samples by solid-phase extraction.
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spelling pubmed-66485012019-08-27 Sequential Fluorescence Recognition of Molybdenum(VI), Arsenite, and Phosphate Ions in a Ratiometric Manner: A Facile Approach for Discrimination of AsO(2)(–) and H(2)PO(4)(–) Banerjee, Mahuya Ta, Sabyasachi Ghosh, Milan Ghosh, Avijit Das, Debasis ACS Omega [Image: see text] An amide-based smart probe (L) is explored for nanomolar detection of Mo(VI) ion in a ratiometric manner, involving hydrogen-bond-assisted chelation-enhanced fluorescence process through inhibition of photoinduced electron transfer process. The recognition of Mo(VI) is associated with a 17-fold fluorescence enhancement and confirmed by single-crystal X-ray diffraction of the resulting Mo(VI) complex (M1). Further, M1 selectively recognizes arsenite through green emission of their adduct (C1) with an 81-fold fluorescence enhancement. Interestingly, dihydrogen phosphate causes dissociation of C1 back to free L having weak fluorescence. The methods are fast, highly selective, and allow their bare eye visualization at physiological pH. All of the interactions have been substantiated by time-dependent density functional theory calculations to rationalize their spectroscopic properties. The corresponding lowest detection limits are 1.5 × 10(–8) M for Mo(VI), 1.2 × 10(–10) M for AsO(2)(–), and 3.2 × 10(–6) M for H(2)PO(4)(–), whereas the respective association constants are 4.21 × 10(5) M(–1) for Mo(VI), 6.49 × 10(4) M(–1) for AsO(2)(–), and 2.11 × 10(5) M(–1) for H(2)PO(4)(–). The L is useful for efficient enrichment of Mo(VI) from aqueous solution, while M1 efficiently removes AsO(2)(–) from environmental samples by solid-phase extraction. American Chemical Society 2019-06-21 /pmc/articles/PMC6648501/ /pubmed/31460185 http://dx.doi.org/10.1021/acsomega.9b00377 Text en Copyright © 2019 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Banerjee, Mahuya
Ta, Sabyasachi
Ghosh, Milan
Ghosh, Avijit
Das, Debasis
Sequential Fluorescence Recognition of Molybdenum(VI), Arsenite, and Phosphate Ions in a Ratiometric Manner: A Facile Approach for Discrimination of AsO(2)(–) and H(2)PO(4)(–)
title Sequential Fluorescence Recognition of Molybdenum(VI), Arsenite, and Phosphate Ions in a Ratiometric Manner: A Facile Approach for Discrimination of AsO(2)(–) and H(2)PO(4)(–)
title_full Sequential Fluorescence Recognition of Molybdenum(VI), Arsenite, and Phosphate Ions in a Ratiometric Manner: A Facile Approach for Discrimination of AsO(2)(–) and H(2)PO(4)(–)
title_fullStr Sequential Fluorescence Recognition of Molybdenum(VI), Arsenite, and Phosphate Ions in a Ratiometric Manner: A Facile Approach for Discrimination of AsO(2)(–) and H(2)PO(4)(–)
title_full_unstemmed Sequential Fluorescence Recognition of Molybdenum(VI), Arsenite, and Phosphate Ions in a Ratiometric Manner: A Facile Approach for Discrimination of AsO(2)(–) and H(2)PO(4)(–)
title_short Sequential Fluorescence Recognition of Molybdenum(VI), Arsenite, and Phosphate Ions in a Ratiometric Manner: A Facile Approach for Discrimination of AsO(2)(–) and H(2)PO(4)(–)
title_sort sequential fluorescence recognition of molybdenum(vi), arsenite, and phosphate ions in a ratiometric manner: a facile approach for discrimination of aso(2)(–) and h(2)po(4)(–)
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648501/
https://www.ncbi.nlm.nih.gov/pubmed/31460185
http://dx.doi.org/10.1021/acsomega.9b00377
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