Europium-(7-carboxymethoxy-4-methyl coumarin)2 Complex based Electrochemical Probe for DNA based on the Interaction between Them

  • Belal Hussein Department of Chemistry, Faculty of Science and Arts, Al Ula, Taibah University, Madina Monawarh, KSA
  • Moustafa Gouda Department of Chemistry, Faculty of Science and Arts, Al Ula, Taibah University, Madina Monawarh, KSA
  • Walid Fathall Department of Mathematical and Physical Sciences, Faculty of Engineering, Port-Said University, Port-Said, Egypt
  • Sherin Arabi Department of Mathematical and Physical Sciences, Faculty of Engineering, Suez Canal University, Ismailia, Egypt

Abstract

The interaction of Eu(III) ion with 7-carboxymethoxy-4-methylcoumarin (CMMC) has been investigated using the potentiometric method in the ethanol-water mixture solvent (0.15 volume fraction). The formation of the different binary, ternary complexes is confirmed by the corresponding pH-potentiometric curves. SUPERQUAD computer program has been used for the refinement of all the calculated constants in our present study. Electroanalytical techniques have been used to confirm the formation of different binary and ternary complexes under investigation. The binding constant of the ternary complex Eu(III)-CMMC-DNA calculated by cyclic voltammetry (CV) and differential pulse (DP) was found to be 1.8 and 2.5x 105 M-1 in Tris-HCl, respectively. The changes in the current intensity have been used for the quantitative determination of DNA over a linear concentration range with LOD of 1.0-1.3 µg/ ml in 0.1 M Tris-HCl buffer.

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Published
2017-09-25
How to Cite
HUSSEIN, Belal et al. Europium-(7-carboxymethoxy-4-methyl coumarin)2 Complex based Electrochemical Probe for DNA based on the Interaction between Them. Journal of New Materials for Electrochemical Systems, [S.l.], v. 20, n. 4, p. 189-195, sep. 2017. ISSN 2292-1168. Available at: <http://new-mat.org/ejournal/index.php/jnmes/article/view/445>. Date accessed: 11 dec. 2017. doi: https://doi.org/10.14447/jnmes.v20i4.445.
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