Synthesis and evaluation of new thienyl and bithienyl-bis-indolylmethanes as colorimetric sensors for anions

Rosa M. F. Batista, Elisabete Oliveira , Cristina Nuñez, Susana P. G. Costa, Carlos Lodeiro, M. Manuela M. Raposo

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The synthesis and full characterization of new bis-indolylmethanes containing thienyl and bithienyl moieties are reported. The sensor ability of the compounds in the presence of halide ions (F- Cl-, Br-, and I-), NO3-, ClO4-, SO42-, CN-, and OH- ions was investigated in acetonitrile. The experimental results indicate that they Could act as selective chromogenic-sensing molecules for the most basic anions F- CN- and OH- as a well-defined color change from yellow to pink was observed. The interaction constants between compounds 1 and 2 in the presence of F, CN, and OH- were calculated and increased in the order OH- > F- > CN-. Copyright (C) 2008 John Wiley & Sons, Ltd.
Original languageEnglish
Pages (from-to)362-366
JournalJournal Of Physical Organic Chemistry
Volume22
Issue number5
DOIs
Publication statusPublished - 1 Jan 2009

Keywords

  • (Bi)thiophene
  • Anion chemosensors
  • Bis-indolylmethanes
  • Colorimetric sensors
  • Heterocycles
  • Acetonitrile
  • Color
  • Complexation
  • Negative ions
  • Sensors
  • Thiophene
  • Colorimetry

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