Issue 79, 2017

Enhanced detection of explosives by turn-on resonance Raman upon host–guest complexation in solution and the solid state

Abstract

The recognition of nitroaromatic explosives by a tetrakis-tetrathiafulvalene-calix[4]pyrrole receptor (TTF-C[4]P) yields a “turn on” and fingerprinting response in the resonance Raman scattering observed in solution and the solid state. Intensity changes in nitro vibrations with analyte complexation occur via a mechanism of resonance between the 785 nm laser line and the strongly absorbing charge-transfer chromophore arising from the complex between electron-donating TTF-C[4]P and electron-accepting nitroaromatic explosives. The addition of chloride forms the Cl·TTF-C[4]P complex resetting the system for reuse.

Graphical abstract: Enhanced detection of explosives by turn-on resonance Raman upon host–guest complexation in solution and the solid state

Supplementary files

Article information

Article type
Communication
Submitted
18 8 2017
Accepted
10 9 2017
First published
20 9 2017

Chem. Commun., 2017,53, 10918-10921

Enhanced detection of explosives by turn-on resonance Raman upon host–guest complexation in solution and the solid state

E. H. Witlicki, S. Bähring, C. Johnsen, M. V. Solano, K. A. Nielsen, D. W. Silverstein, C. W. Marlatt, L. Jensen, J. O. Jeppesen and A. H. Flood, Chem. Commun., 2017, 53, 10918 DOI: 10.1039/C7CC06517E

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