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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

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
  • General Chemistry
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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