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

Kausar Rajar, Esra Alveroglu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


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 μM, with the limit of detection of 0.2 μM. 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.

Original languageEnglish
Article number110748
JournalMaterials Research Bulletin
Publication statusPublished - Apr 2020

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Ltd


Kausar Rajar acknowledges the fellowship support from the Scientific and Technology Research Council of Turkey (TUBITAK)-2221 Visiting Scientist Program for International Scientist. Also, we would like to Thanks Prof. Dr. Turan Ozturk (Istanbul Technical University, Chemistry Department) for FTIR measurements. Appendix A

FundersFunder number
Scientific and Technology Research Council of Turkey


    • Carbon nanotube
    • Feion
    • Fluorescence sensor
    • Pyranine


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