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Luminescent Lanthanide-Based Probes for the Detection of Nitroaromatic Compounds in Water

[Image: see text] A new mixed pyridyl–carboxylate ligand with two picolinate chromophores and a flexible linear spacer, potassium 2,2′-(butane-1,4-diylbis((pyridin-2-ylmethyl)azanediyl))diacetate (K(2)bpbd), which is obtained in high yield and spectroscopically characterized, has been utilized to ma...

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Autores principales: Khullar, Sadhika, Singh, Sandhya, Das, Prasenjit, Mandal, Sanjay K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648830/
https://www.ncbi.nlm.nih.gov/pubmed/31459700
http://dx.doi.org/10.1021/acsomega.9b00223
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author Khullar, Sadhika
Singh, Sandhya
Das, Prasenjit
Mandal, Sanjay K.
author_facet Khullar, Sadhika
Singh, Sandhya
Das, Prasenjit
Mandal, Sanjay K.
author_sort Khullar, Sadhika
collection PubMed
description [Image: see text] A new mixed pyridyl–carboxylate ligand with two picolinate chromophores and a flexible linear spacer, potassium 2,2′-(butane-1,4-diylbis((pyridin-2-ylmethyl)azanediyl))diacetate (K(2)bpbd), which is obtained in high yield and spectroscopically characterized, has been utilized to make new lanthanide complexes, namely, [Ln(bpbd) (H(2)O)(2)(NO(3))]·xH(2)O, where Ln = Tb (1) and x = 6, Ln = Sm (2) and x = 7, and Ln = Dy (3) and x = 7. These complexes have been extensively characterized by various spectroscopic techniques (UV–vis and Fourier transform infrared spectroscopy), elemental analyses, thermogravimetric analysis, field emission scanning electron microscopy, and powder X-ray diffraction. These show very intense characteristic luminescence features that confirm the antenna effect of the ligand on the metal center. These complexes have been utilized for the detection of various nitroaromatic compounds. Among these three complexes, 1 is found to be the best for the selective sensing of 2,4,6-trinitrophenol in water with a detection limit of (0.35 ± 0.05) ppm. Its Stern–Volmer constant, K(SV) [(5.48 ± 0.1) × 10(4) M(–1)], is one of the highest among similar sensors reported so far.
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spelling pubmed-66488302019-08-27 Luminescent Lanthanide-Based Probes for the Detection of Nitroaromatic Compounds in Water Khullar, Sadhika Singh, Sandhya Das, Prasenjit Mandal, Sanjay K. ACS Omega [Image: see text] A new mixed pyridyl–carboxylate ligand with two picolinate chromophores and a flexible linear spacer, potassium 2,2′-(butane-1,4-diylbis((pyridin-2-ylmethyl)azanediyl))diacetate (K(2)bpbd), which is obtained in high yield and spectroscopically characterized, has been utilized to make new lanthanide complexes, namely, [Ln(bpbd) (H(2)O)(2)(NO(3))]·xH(2)O, where Ln = Tb (1) and x = 6, Ln = Sm (2) and x = 7, and Ln = Dy (3) and x = 7. These complexes have been extensively characterized by various spectroscopic techniques (UV–vis and Fourier transform infrared spectroscopy), elemental analyses, thermogravimetric analysis, field emission scanning electron microscopy, and powder X-ray diffraction. These show very intense characteristic luminescence features that confirm the antenna effect of the ligand on the metal center. These complexes have been utilized for the detection of various nitroaromatic compounds. Among these three complexes, 1 is found to be the best for the selective sensing of 2,4,6-trinitrophenol in water with a detection limit of (0.35 ± 0.05) ppm. Its Stern–Volmer constant, K(SV) [(5.48 ± 0.1) × 10(4) M(–1)], is one of the highest among similar sensors reported so far. American Chemical Society 2019-03-13 /pmc/articles/PMC6648830/ /pubmed/31459700 http://dx.doi.org/10.1021/acsomega.9b00223 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 Khullar, Sadhika
Singh, Sandhya
Das, Prasenjit
Mandal, Sanjay K.
Luminescent Lanthanide-Based Probes for the Detection of Nitroaromatic Compounds in Water
title Luminescent Lanthanide-Based Probes for the Detection of Nitroaromatic Compounds in Water
title_full Luminescent Lanthanide-Based Probes for the Detection of Nitroaromatic Compounds in Water
title_fullStr Luminescent Lanthanide-Based Probes for the Detection of Nitroaromatic Compounds in Water
title_full_unstemmed Luminescent Lanthanide-Based Probes for the Detection of Nitroaromatic Compounds in Water
title_short Luminescent Lanthanide-Based Probes for the Detection of Nitroaromatic Compounds in Water
title_sort luminescent lanthanide-based probes for the detection of nitroaromatic compounds in water
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648830/
https://www.ncbi.nlm.nih.gov/pubmed/31459700
http://dx.doi.org/10.1021/acsomega.9b00223
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