Fluorescein Based Three-channel Probe for the Selective and Sensitive Detection of CO32- Ions in an Aqueous Environment and Real Water Samples

Karakus E., Erdemir E., Suna G., Liv L., Gunduz S., Can S. A.

JOURNAL OF FLUORESCENCE, vol.31, pp.1617-1625, 2021 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 31
  • Publication Date: 2021
  • Doi Number: 10.1007/s10895-021-02779-0
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Biotechnology Research Abstracts, Chimica, Compendex, EMBASE, MEDLINE
  • Page Numbers: pp.1617-1625
  • Keywords: Fluorescein, Indole, Carbonate ions, Chemosensor, Electrochemical sensor, Water sample analysis, SODIUM-CARBONATE, CHEMOSENSORS, DIOXIDE, SENSOR, BICARBONATE, REAGENTS, FLUORIDE
  • Istanbul University Affiliated: Yes


We have constructed a novel fluorescein-based fluorescent chemosensor, FL-In, functionalised with an indole moiety and capable of sensing by both the optical "turn-on" and electrochemical detection of carbonate ions (CO32-) in aqueous media. The probe exhibits excellent selectivity and a low detection limit (0.27 mu M) regarding carbonate ions by a possible coordination and hydrolysis reaction mechanism. The developed probe successfully detected CO32- ions in different samples of water. Also, in a simple filter paper experiment, we documented its ability to allow the monitoring of CO32- with the naked eye. Grpahical Abstract