Imidazo-benzo-15-crown-5 ethers bearing arylthienyl and bithienyl moieties as novel fluorescent chemosensors for Pd2+ and Cu2+

Rosa M. F. Batista, E. Oliveira, Susana P. G. Costa, C. Lodeiro, M. M. M. Raposo

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

Novel fluorescent ionophores bearing imidazo-arylthienyl or imidazo-bithienyl π-conjugated bridges functionalized with one or two fused benzo-15-crown-5 ethers as receptor units are reported. The sensing ability of the compounds in the presence of metallic cations (Li+, Na +, K+, Ca2+, Zn2+, Cu2+, Ni2+, Pd2+, and Hg2+) and fluoride ion was studied in MeCN/DMSO solutions by absorption and emission spectroscopy. The experimental results indicate that all compounds could act as selective fluorimetric sensors for Cu2+ and Pd2+ and also for the fluoride ion, in the case of the bis-substituted crown ether derivatives. © 2011 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)7106-7113
Number of pages8
JournalTetrahedron
Volume67
Issue number37
DOIs
Publication statusPublished - 16 Sep 2011

Keywords

  • Arylthiophene
  • Bithiophene
  • CHEQ effect
  • Crown ethers
  • Cu2+
  • F-
  • Fluorescent chemosensors
  • Imidazole
  • Pd2+
  • calcium ion
  • cation
  • copper ion
  • ether derivative
  • fluoride ion
  • imidazo benzo 15 crown 5 ether derivative
  • ionophore
  • lithium ion
  • mercury
  • nickel
  • palladium ion
  • potassium ion
  • proton
  • sodium ion
  • unclassified drug
  • zinc ion
  • absorption spectroscopy
  • article
  • chemical analysis
  • chemical interaction
  • flame photometry
  • fluorescence
  • priority journal
  • sensor
  • spectrofluorometry
  • spectrophotometry
  • synthesis

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