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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Main Authors:	Aamnayee Mishra, R. Dheepika, P. A. Parvathy, P. M. Imran, N. S. P. Bhuvanesh, S. Nagarajan
Format:	Article
Language:	English
Published:	Nature Publishing Group 2021-09-01
Series:	Scientific Reports
Online Access:	https://doi.org/10.1038/s41598-021-97832-0

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spelling	doaj-5873cc956cc44a07bbd2695619c8686c2021-10-03T11:33:57ZengNature Publishing GroupScientific Reports2045-23222021-09-0111111010.1038/s41598-021-97832-0Fluorescence quenching based detection of nitroaromatics using luminescent triphenylamine carboxylic acidsAamnayee Mishra0R. Dheepika1P. A. Parvathy2P. M. Imran3N. S. P. Bhuvanesh4S. Nagarajan5Department of Chemistry, Central University of Tamil NaduDepartment of Chemistry, Central University of Tamil NaduDepartment of Chemistry, Central University of Tamil NaduDepartment of Chemistry, Islamiah CollegeDepartment of Chemistry, Texas A&M UniversityDepartment of Chemistry, Central University of Tamil NaduAbstract 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.https://doi.org/10.1038/s41598-021-97832-0
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Aamnayee Mishra R. Dheepika P. A. Parvathy P. M. Imran N. S. P. Bhuvanesh S. Nagarajan
spellingShingle	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 Scientific Reports
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 Publishing Group
series	Scientific Reports
issn	2045-2322
publishDate	2021-09-01
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.
url	https://doi.org/10.1038/s41598-021-97832-0
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Fluorescence quenching based detection of nitroaromatics using luminescent triphenylamine carboxylic acids

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