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

Edward H. Witlicki, Steffen Bähring, Carsten Johnsen, Marta V. Solano, Kent A. Nielsen, Daniel W. Silverstein, Craig W. Marlatt, Lasse Jensen, Jan O. Jeppesen, Amar H. Flood*

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Abstrakt

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.

OriginalsprogEngelsk
TidsskriftChemical Communications
Vol/bind53
Udgave nummer79
Sider (fra-til)10918-10921
Antal sider4
ISSN1359-7345
DOI
StatusUdgivet - 2017

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