Coordination properties of the bioligands creatinine and creatine in various reaction media
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A review of recent advances in non-enzymatic electrochemical creatinine biosensing
2021, Analytica Chimica ActaFe<inf>2</inf>O<inf>3</inf>/polyaniline supramolecular nanocomposite: A receptor free sensor platform for the quantitative determination of serum creatinine
2020, Analytica Chimica ActaCitation Excerpt :The characteristic peaks of Fe with two peaks located at binding energies in the range of 710–725 eV ensured the presence of Fe3+ state surface charge, which could form co-ordination bond with PANI matrices and played a significant role in metal CRE complex in the sensor applications. Fig. 4A shows the CV obtained redox responses of the modified electrodes materials in the presence and absence of the target analyte CRE (1 μM) in 0.1 M PB (pH 6) solution at the scan rate of 50 mV s−1 Initially, the bare GCE didn’t show any redox response towards CRE, whereas Fe2O3/GCE has shown distinguished reduction peak at 0.2 mV due to the coordination ability of CRE with metal ion resulting the complex formation of CRE with Fe3+ ions during negative scan as given in Scheme S1 [40,41]. In the schematic diagram, ‘l’ is the coordinated iron, ‘m’ is iron/electron involved in the cathodic process and n corresponds to number of analyte molecule (CRE) need to the iron complex formation.
Non-enzymatic electrochemical determination of creatinine using a novel screen-printed microcell
2020, TalantaCitation Excerpt :The current peak at +0.3 V corresponds to the cathodic process (reduction of Fe3+ to Fe2+), and in the opposite sweep direction at + 0.5 V, the current peak corresponds to the anodic process (oxidation of Fe2+ to Fe3+). The CNN has capacity to coordinate several metal cations, such as copper, mercury, platinum, cadmium, cobalt, iron, and others [22,23]. Accordingly, after the addition of 3 μL of a 5.0 mmol L−1 CNN, the cyclic voltammogram did not present the redox process of Fe3+, indicating that the CNN complexed the metallic ion (Fig. 3, orange).
Fabrication of a disposable non-enzymatic electrochemical creatinine sensor
2017, Sensors and Actuators, B: ChemicalCitation Excerpt :Quantitative determination of creatinine was performed by preconcentration followed by oxidative stripping on screen printed carbon electrode [21]. Creatinine forms complexes with different transition metal ions such as Ag(I), Hg(II), Cd(II), Zn(II), Co(II), Ni(II), Cu(II), Pt(II) and Pd(II) since it has several donor groups in its main tautomeric form [22]. This property has been utilized for the quantitative determination of creatinine.
Interaction between creatinine and sulfonated derivatives of cobalt phthalocyanine
2017, Mendeleev Communications