Issue 3, 2014
From the journal:

Journal of Materials Chemistry C

AIPE-active green phosphorescent iridium(iii) complex impregnated test strips for the vapor-phase detection of 2,4,6-trinitrotoluene (TNT)†

K. S. Bejoymohandas,a   T. M. George,a   S. Bhattacharya,b   S. Natarajanb  and  M. L. P. Reddy*a  

* Corresponding authors

a Materials Science and Technology Division, CSIR-Network of Institutes for Solar Energy, CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST), Thiruvananthapuram-695 019, India
E-mail: mlpreddy55@gmail.com

b Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India

Abstract

Detection of explosives, especially trinitrotoluene (TNT), is of utmost importance due to its highly explosive nature and environmental hazard. Therefore, detection of TNT has been a matter of great concern to the scientific community worldwide. Herein, a new aggregation-induced phosphorescent emission (AIPE)-active iridium(III) bis(2-(2,4-difluorophenyl)pyridinato-N,C2′) (2-(2-pyridyl)benzimidazolato-N,N′) complex [FIrPyBiz] has been developed and serves as a molecular probe for the detection of TNT in the vapor phase, solid phase, and aqueous media. In addition, phosphorescent test strips have been constructed by impregnating Whatman filter paper with aggregates of FIrPyBiz for trace detection of TNT in contact mode, with detection limits in nanograms, by taking advantage of the excited state interaction of AIPE-active phosphorescent iridium(III) complex with that of TNT and the associated photophysical properties.

Graphical abstract: AIPE-active green phosphorescent iridium(iii) complex impregnated test strips for the vapor-phase detection of 2,4,6-trinitrotoluene (TNT)

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Article information

DOI
https://doi.org/10.1039/C3TC31941E
Article type
Paper
Submitted
03 Oct 2013
Accepted
20 Oct 2013
First published
22 Oct 2013

J. Mater. Chem. C, 2014,2, 515-523

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AIPE-active green phosphorescent iridium(III) complex impregnated test strips for the vapor-phase detection of 2,4,6-trinitrotoluene (TNT)

K. S. Bejoymohandas, T. M. George, S. Bhattacharya, S. Natarajan and M. L. P. Reddy, J. Mater. Chem. C, 2014, 2, 515 DOI: 10.1039/C3TC31941E

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