Issue 22, 2014

Selective fluorescence sensing of polynitroaromatic explosives using triaminophenylbenzene scaffolds

Abstract

A supramolecular fluorophore, 1,3,5-tris(4′-aminophenyl)benzene (TAPB), selectively senses polynitroaromatic compounds (PNAC), viz. 2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene (DNT), picric acid (PA), m-dinitrobenzene (m-DNB) and p-dinitrobenzene (p-DNB) through donor–acceptor complexation. Steady-state and time resolved fluorescence measurements indicate predominantly static quenching of the TAPB fluorophore with TNT, DNT, m-DNB and p-DNB. In the case of PA, a new emissive band with a marginally longer lifetime emerges due to complex formation with TAPB. The selectivity of sensing action is rationalized through computation of HOMO and LUMO energies for both the fluorophore and the analytes using the M06-2X/6-311+G(d,p) level of theory. Practical utility of the fluorophore has also been demonstrated with TNT and DNT vapour.

Graphical abstract: Selective fluorescence sensing of polynitroaromatic explosives using triaminophenylbenzene scaffolds

Supplementary files

Article information

Article type
Paper
Submitted
04 Mar 2014
Accepted
28 Mar 2014
First published
31 Mar 2014

Phys. Chem. Chem. Phys., 2014,16, 10651-10658

Author version available

Selective fluorescence sensing of polynitroaromatic explosives using triaminophenylbenzene scaffolds

P. Vishnoi, M. G. Walawalkar, S. Sen, A. Datta, G. N. Patwari and R. Murugavel, Phys. Chem. Chem. Phys., 2014, 16, 10651 DOI: 10.1039/C4CP00930D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements