Rapid detection of fluoride in potable water using a novel fluorogenic compound 7-O-tert-butyldiphenylsilyl-3-cyano-4-methylcoumarin


  • Edwin Otieno Akumu Kabarak University
  • Sellah J Kebenei Kabarak University




Fluoride, Detection, Coumarin, chemosensor, fluorescenceÂ


The study present the synthesis of a new fluoride sensor 7-O-tertbutyldiphenylsilyl-3-cyano-4-methylcoumarin (Si-CHMC) that imparts a blue fluorescence to an aqueous solution in the presence of fluoride ions. Si-CHMC has excellent sensitivity and selectivity towards fluoride. The results further indicate that fluoride concentrations as low as 0.01M can be accurately detected within almost instantly as the response time is within a second. Fluoride testing with Si-CHMC is simple and relatively rapid compared to the conventional methods that require skilled personnel. Hence, the method presented herein can be applied and is particularly useful for monitoring the quality of portable water among communities.


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Author Biographies

Edwin Otieno Akumu, Kabarak University

Lecturer, Department of Biological and Physical Sciences

Sellah J Kebenei, Kabarak University

Senior Lecturer, Department of Biological and Physical Sciences


Chavali, R. (2015). Rapid detection of fluoride in potable water using a novel fluorogenic compound 7-O-tert-butyldiphenylsilyl-4-methylcoumarin. Analytical Chemistry Research, 6.

Elmes, R. B. P., Turner, P., & Jolliffe, K. A. (2013). Colorimetric and Luminescent Sensors for Chloride: Hydrogen Bonding vs Deprotonation. Org. Lett., 15(22), 4.

Ghosh, K., & Adhikari, S. (2006). Colorimetric and fluorescence sensing of anions using thiourea based coumarin receptors. Tetrahedron Letters, 5.

Huang, Y.-C. (2014). Coumarin dye-embedded semiconducting polymer dots for ratiometric sensing of fluoride ions in aqueous solution and bio-imaging in cells. Journal of Materials Chemistry B, 4.

Jiao, Y., Zhu, B., Chen, J., & Duan, X. (2015). Fluorescent Sensing of Fluoride in Cellular System. 5(2), 15.

Langton, M. J., Serpell, C. J., & Beer, P. D. (2016). Anion Recognition in Water: Recent Advances from a Supramolecular and Macromolecular Perspective. 14.

Neel, E. A. A., Aljabo, A., Strange, A., Ibrahim, S., Coathup, M., Young, A. M., … Mudera, V. (n.d.). Demineralization–remineralization dynamics in teeth and bone. International Journal of Nanomedicine, 21.

Padi, S. (2019). Review on Efficacy and Alternative Approaches for Fluoride Toothpaste Used in Younger Children. (3), 3.

Sabti, M. Y., Al-Yahya, H., Al-Sumait, N., Akbar, A. A., & Qudeimat, M. A. (2019). Dental and medical practitioners’ perception of community water fluoridation as a caries preventive measure. European Archives of Paediatric Dentistry, 20(1), 53–61. https://doi.org/10.1007/s40368-018-0385-1

Singhal, P., & Jha, S. K. (2019). A semi quantitative visual probe for fluoride ion sensing in aqueous medium. Journal of Luminescence, 206, 113–119. https://doi.org/10.1016/j.jlumin.2018.10.065

Tang, X., Zhu, Z., Liu, R., Ni, L., Qiu, Y., Han, J., & Wang, Y. (2019). A novel OFF-ON-OFF fluorescence probe based on coumarin for Al3+ and F− detection and bioimaging in living cells. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 211, 299–305. https://doi.org/10.1016/j.saa.2018.12.022

Wu, D., Sedgwick, A. C., Gunnlaugsson, T., Akkaya, E. U., Yoon, J., & James, T. D. (2017). Fluorescent chemosensors: The past, present and future. Chem Soc Rev, 20.

Wu, X., Wang, H., Yang, S., Tian, H., Liu, Y., & Sun, B. (2019). A novel coumarin-based fluorescent probe for sensitive detection of copper(II) in wine. Food Chemistry, 284, 23–27. https://doi.org/10.1016/j.foodchem.2019.01.090

Yang, L. (2013). A new carbazole-based Schiff-base as fluorescent chemosensor for selective detection of Fe3+ and Cu2+. 7.



How to Cite

Edwin Otieno Akumu, & Sellah J Kebenei. (2019). Rapid detection of fluoride in potable water using a novel fluorogenic compound 7-O-tert-butyldiphenylsilyl-3-cyano-4-methylcoumarin. Kabarak Journal of Research & Innovation, 8(1), 33–38. https://doi.org/10.58216/kjri.v8i1.117