A highly selective fluorescent chemosensor for Ag + based on calix[4]arene with lower-rim proximal triazolylpyrenes

Nae Jen Wang, Chung-Ming Sun*, Wen-Sheng Chung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Ligand 3, a calix[4]arene with lower-rim proximal triazolylpyrenes, is a ratiometric fluorescent chemosensor for Ag + with higher sensitivity compared to ligand 5, a calix[4]arene with lower-rim distal triazolylpyrenes, and the conventional fluoroionophore with non-conjugated triazole and pyrene. In a polar protic solvent, the binding ratios for 3·Ag + was determined to be 1:1 and the association constant was found to be 7.0 × 10 3 M -1. The detection of Ag + by ligand 3 even works in aqueous methanol solution.

Original languageEnglish
Pages (from-to)984-993
Number of pages10
JournalSensors and Actuators, B: Chemical
Volume171-172
DOIs
StatePublished - 1 Aug 2012

Keywords

  • Calix[4]arene
  • Chemosensor
  • Click
  • Excimer
  • Fluorescence
  • Triazolylpyrene

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