A novel heteroacene, 2-(2,3,4,5-tetrafluorophenyl)-1H-imidazo[4,5-b]phenazine as a multi-response sensor for F- detection

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Original languageEnglish
Pages (from-to)2633-2636
Journal / PublicationTetrahedron Letters
Issue number21
Online published16 Mar 2013
Publication statusPublished - 22 May 2013
Externally publishedYes


A novel heteroacene, 2-(2,3,4,5-tetrafluorophenyl)-1H-imidazo[4,5-b]phenazine has been successfully synthesized. The heteroacene can selectively detect F- over Cl-, Br-, I-, NO3-, HSO4-, ClO4-, and BF4- in organic solvents through colorimetric and fluorescent responses. The interaction between the heteroacene and F- was investigated through UV-Vis, fluorescence, and 1H NMR titration experiments, which suggested that the effects might occur via a combined process including hydrogen bond, deprotonation, and anion-π interactions between the sensor and F-. © 2013 Elsevier Ltd. All rights reserved.

Research Area(s)

  • Anion sensor, Combined process, Heteroacene, Multi-response, Selective, Synthesis