A highly selective solid-contact electrode for Ag + based on a monoazathiacrown ether ionophore

  • Shun Yang Yu*
  • , Lan Ju
  • , Fu Hai Li
  • , Yong Ming Liu
  • , Jun Feng Fang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

A new solid-contact Ag +-selective electrode was prepared with 9,10,12,13,24,25-hexahydro-5H,15H,23H-dibenzo[b,q][1,7,10,13,19,4,16] -entathiadiazacyclodocosine-6,16(7H,17H)-dione as ionophore, and α,ω-dihexylsexithiophene (DH-6T) ion-to-electron transducer. The sensor exhibited a working concentration range of 10 -8 to 10 -3 mol/L, with a near-Nernstian slope of 55.1 ± 0.2 mV/dec and detection limit of 1.7 × 10 -9 mol/L. The fabricated electrodes demonstrated excellent selectivity over the most common monovalent and divalent cations.

Original languageEnglish
Pages (from-to)488-491
Number of pages4
JournalChinese Chemical Letters
Volume23
Issue number4
DOIs
StatePublished - Apr 2012
Externally publishedYes

Keywords

  • Ion-selective electrodes
  • Low detection limit
  • Silver
  • Solid contact

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