CNTs based Water soluble fluorescent sensor for selective detection of Fe3+ ion

Rajar K., Alveroğlu Durucu E.

MATERIALS RESEARCH BULLETIN, vol.124, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 124
  • Publication Date: 2020
  • Doi Number: 10.1016/j.materresbull.2019.110748
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Chimica, Compendex, INSPEC
  • Istanbul Technical University Affiliated: Yes


Herein, a fluorescence sensor based on the fluorescence quenching phenomena was developed by the functionalization of Pyranine molecules over the surface of carbon nanotubes (Pry-CNTs) for quick, selective and sensitive detection of Fe3+ ion. The change in the emission along with the Fluorescence Quenching response was found linearly comparative to the Fe3+ ion concentration in the range of 0.1 - 10 mu M, with the limit of detection of 0.2 mu M. The Fluorescence study proved the coordination interaction between Fe3+ ion and Pry-CNTs lead to the recognition process. The developed fluorescence sensor is the simple and selective link for the determination of Fe3+ ion. The recovery of this method in the determination of Fe3+ ion in real water samples was found to be 99.5-100 %. This fluorescence sensor (Pyr-CNTs) can be used as a sensor for Fe3+ ion and promote for many applications in the environmental, chemical and biological systems.