Naphthol-naphthalimide based ‘turn-on’ fluorescent sensor for ClO in aqueous media and test kit

Su Chan Lee, Cheal Kim

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19 Scopus citations

Abstract

A novel naphthol-naphthalimide-based fluorescent chemosensor CGB (N-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)-3-hydroxy-2-naphthamide) for ClO was synthesized. Sensor CGB can detect ClO by a fluorescent turn-on method. The detection limit is calculated to be 10.67 μM. CGB showed a remarkable selectivity for ClO over diverse competing anions including reactive oxygen species (ROS) via deprotonation reaction. Additionally, sensor CGB was well applied as a fluorescent test kit for the determination of ClO. Sensing mechanism of CGB to ClO was demonstrated by fluorescent and UV–vis spectroscopy, ESI-mass, NMR titration and DFT calculations.

Original languageEnglish
Article number107545
JournalInorganic Chemistry Communications
Volume108
DOIs
StatePublished - Oct 2019

Keywords

  • 1,8-naphthalimide
  • Fluorescent chemosensor
  • Hypochlorite
  • Test kit
  • Theoretical calculations

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