Fluorescence quenching based detection of nitroaromatics using luminescent triphenylamine carboxylic acids

Abstract Detection of nitroaromatics employing greener techniques has been one of the most active research fields in chemistry. A series of triphenylamine (TPA) functionalized carboxylic acids were synthesized and characterized using various spectroscopic techniques including single-crystal X-ray di...

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Autores principales: Aamnayee Mishra, R. Dheepika, P. A. Parvathy, P. M. Imran, N. S. P. Bhuvanesh, S. Nagarajan
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Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/5873cc956cc44a07bbd2695619c8686c
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spelling oai:doaj.org-article:5873cc956cc44a07bbd2695619c8686c2021-12-02T18:51:07ZFluorescence quenching based detection of nitroaromatics using luminescent triphenylamine carboxylic acids10.1038/s41598-021-97832-02045-2322https://doaj.org/article/5873cc956cc44a07bbd2695619c8686c2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97832-0https://doaj.org/toc/2045-2322Abstract Detection of nitroaromatics employing greener techniques has been one of the most active research fields in chemistry. A series of triphenylamine (TPA) functionalized carboxylic acids were synthesized and characterized using various spectroscopic techniques including single-crystal X-ray diffraction analysis. The interaction of carboxylic acid-decorated TPAs with nitroaromatic compounds was photophysically explored using absorption and emission spectroscopy. Stern–Volmer plot accounts for the appreciable quenching constant of the TPA-acids. Density functional theory calculations were carried out to study the new compounds' frontier molecular orbital energy levels and the possible interactions with picrate anion and revealed an unusual charge transfer interaction between acids and picrate anion. The contact mode detection shows the TPA-acids can be used as dip-strip sensors for picric acid detection.Aamnayee MishraR. DheepikaP. A. ParvathyP. M. ImranN. S. P. BhuvaneshS. NagarajanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Aamnayee Mishra
R. Dheepika
P. A. Parvathy
P. M. Imran
N. S. P. Bhuvanesh
S. Nagarajan
Fluorescence quenching based detection of nitroaromatics using luminescent triphenylamine carboxylic acids
description Abstract Detection of nitroaromatics employing greener techniques has been one of the most active research fields in chemistry. A series of triphenylamine (TPA) functionalized carboxylic acids were synthesized and characterized using various spectroscopic techniques including single-crystal X-ray diffraction analysis. The interaction of carboxylic acid-decorated TPAs with nitroaromatic compounds was photophysically explored using absorption and emission spectroscopy. Stern–Volmer plot accounts for the appreciable quenching constant of the TPA-acids. Density functional theory calculations were carried out to study the new compounds' frontier molecular orbital energy levels and the possible interactions with picrate anion and revealed an unusual charge transfer interaction between acids and picrate anion. The contact mode detection shows the TPA-acids can be used as dip-strip sensors for picric acid detection.
format article
author Aamnayee Mishra
R. Dheepika
P. A. Parvathy
P. M. Imran
N. S. P. Bhuvanesh
S. Nagarajan
author_facet Aamnayee Mishra
R. Dheepika
P. A. Parvathy
P. M. Imran
N. S. P. Bhuvanesh
S. Nagarajan
author_sort Aamnayee Mishra
title Fluorescence quenching based detection of nitroaromatics using luminescent triphenylamine carboxylic acids
title_short Fluorescence quenching based detection of nitroaromatics using luminescent triphenylamine carboxylic acids
title_full Fluorescence quenching based detection of nitroaromatics using luminescent triphenylamine carboxylic acids
title_fullStr Fluorescence quenching based detection of nitroaromatics using luminescent triphenylamine carboxylic acids
title_full_unstemmed Fluorescence quenching based detection of nitroaromatics using luminescent triphenylamine carboxylic acids
title_sort fluorescence quenching based detection of nitroaromatics using luminescent triphenylamine carboxylic acids
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/5873cc956cc44a07bbd2695619c8686c
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