NDLI: Extended cavity pyrene-based iptycenes for the turn-off fluorescence detection of RDX and common nitroaromatic explosives

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New Journal of Chemistry Vol - 41 Issue - 5

New Journal of Chemistry Vol - 41 Issue - 4

New Journal of Chemistry Vol - 41 Issue - 3

New Journal of Chemistry Vol - 41 Issue - 2

New Journal of Chemistry Vol - 41 Issue - 1

New Journal of Chemistry Vol -39

New Journal of Chemistry Vol -29

New Journal of Chemistry Vol -0

Extended cavity pyrene-based iptycenes for the turn-off fluorescence detection of RDX and common nitroaromatic explosives

Content Provider	Royal Society of Chemistry (RSC)
Author	Giri, Kousik Kopchuk, Dmitry S. Kovalev, Igor S. Slepukhin, Pavel A. Charushin, Valery N. Santra, Sougata Taniya, Olga S. Chupakhin, Oleg N. Majee, Adinath Khasanov, Albert F. Rahman, Matiur
Copyright Year	2017
Abstract	Extended cavity pyrene-based iptycenes have been synthesized by using the Diels–Alder reaction between in situ generated dehydropyrenes and anthracene. The photophysical properties and the interaction of these iptycenes with nitro-explosive components were studied both in solution and in the solid state by using fluorescence spectroscopy and X-ray crystallography, respectively. Due to the presence of both the large iptycene cavity and the central pyrene core, an unprecedently high fluorescence-quenching response towards non-aromatic and non-planar 1,3,5-trinitroperhydro-1,3,5-triazine (RDX) has been observed both in solution (with an apparent Stern–Volmer constant value aKSV up to 1.53 × 103 M−1) and in the vapor phase (50–75% fluorescence quenching of the PU films doped with chemosensors). In the case of nitroaromatic explosives, nitrobenzene (NB), 2,4-DNT, TNT, and 2,4,6-trinitrophenol (TNP or picric acid, PA), pyrene-based iptycenes also demonstrate a good fluorescence-quenching response both in solutions (with apparent Stern–Volmer constant values aKSV = 0.4–8.0 × 103 M−1) and in the vapor phase (up to 90% fluorescence quenching of the PU films doped with chemosensors). The “sphere of action” fluorescence quenching model was suggested.
Starting Page	2309
Ending Page	2320
Page Count	12
File Format	HTM / HTML PDF
ISSN	11440546
Volume Number	41
Issue Number	6
Journal	New Journal of Chemistry
DOI	10.1039/c6nj02956f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Théâtre National Populaire Spectroscopy Anthracene Nitrobenzene Trinitrotoluene RDX Volmer Fluorescence Diels\u2013Alder reaction X-ray crystallography Pyrene TNP Triazine Picric acid TNT
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Catalysis

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