Ferrocenoyl-amino acids: redox response towards di- and trivalent metal ions |
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Authors: | Francis E Appoh |
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Institution: | Department of Chemistry, 110 Science Place, University of Saskatchewan, Sask., Canada S7N 5C9 |
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Abstract: | The interaction of six ferrocene-amino acid conjugates (Fc-CO-Gly-OH (2a), Fc-CO-Asp-OH (3a), Fc-CO-Glu-OH (4a), 1,1′-Fc(CO-Gly-OH) (2b), 1,1′-Fc(CO-Asp-OH) (3b), and 1,1′-Fc(CO-Glu-OH) (4b)) with Mg2+, Ca2+, Zn2+, La3+, and Tb3+ was investigated in aqueous solutions using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Addition of metal ions to solutions caused, in some cases, large changes in the half-wave potential, E1/2. Our electrochemical results show that the Gly systems, 2a and 2b, show a preference for binding Mg2+, whereas the Asp and Glu conjugates prefer binding Ln3+. |
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Keywords: | Ferrocene Amino acid Bioconjugate Metal binding Electrochemistry |
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