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

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)10918-10921
Number of pages4
JournalChemical Communications
Volume53
Issue number79
DOIs
StatePublished - 2017

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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