Electrochemical deposition of the new manganese(II) Schiff-base complex on a gold template and its application for dopamine sensing in the presence of interfering biogenic compounds

Synthesis, Spectroscopic Studies and X-Ray Diffraction of Heptacoordinated Mn(II) and Co(II) Complexes with Ligands Derived from Carbonohydrazide

“…Transition metal coordination compounds with Schiff bases continue to attract the attention of researchers because of the easier synthesis, the stability of the molecular structures and the large diverse properties observed [1]- [11]. Indeed catalytic [12] [13] [14], optical [15], magnetic [16] [17], fluorescent [18] [19] and biological activities [8] [20] [21] [22] are reported.…”

Utilization of a new gold/Schiff-base iron(iii) complex composite as a highly sensitive voltammetric sensor for determination of epinephrine in the presence of ascorbic acid

“…As a consequence of facile and efficient synthetic protocols, we have recently focused our attention on Schiff-base scaffolded metallosupramolecular architectures, which renders them suitable systems for viable industrial applications. [34][35][36] As a result, novel voltammetric sensor has been developed (Au/ [Mn 2 (H 2 L) 2 ](ClO 4 ) 2 composite, where H 3 L is ligand -2,6-bis((2-(1H-benzo[d]imidazol-2-yl)-2-methylhydrazono)methyl)-4-(tertbutyl)phenol) and applied for quantitative detection of dopamine and its interfering biogenic compounds. 36 It has struck us that such systems have been recognized as an unexplored niche with regard to deposition onto gold electrodes and sensing of biologically relevant compounds and in turn inspired us to pursue this subject with regard to the other metal ions.…”

New self-assembled layers composed with gold nanoparticles, cysteamine and dihydrolipoic acid deposited on bare gold template for highly sensitive and selective simultaneous sensing of dopamine in the presence of interfering ascorbic and uric acids

“…The earlier [17,35,37,44,56] and present studies have shown that the gold sol obtained by the Turkevich method [46] used in this work contains gold nanoparticles of the average diameter of about 16 nm, as evaluated from the transmission electron microscopy image (TEM) (Fig. 1b).…”

“…Nevertheless, they effectively protect the metal surface against adsorption of reaction products poisonous for the electrode surface [42]. As proved, the use of nanoparticles of noble metals can bring a much higher catalytic effect for processes occurring at modified electrodes when compared to those occurring at unmodified ones [14,19,35,37,43,44].…”