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Evaluation of the structure–activity relationship of thrombin with thrombin bin...
Diculescu, Victor Constantin; Chiorcea-Paquim, Ana-Maria; Eritja, Ramon; Oliveira-Brett, Ana MariaThe structure–activity relationship of the complex between thrombin and thrombin binding aptamers (TBA) was evaluated by differential pulse voltammetry at a glassy carbon electrode and atomic force microscopy at a highly oriented pyrolytic graphite electrode. The effects on the interaction with thrombin of TBA primary and secondary structures as well as of its folding properties in the presence of alkaline meta...
Metallo-functionalized first-generation salicylaldimine poly(propylenimine) tet...
Martinovic, Jasmina; Chiorcea-Paquim, Ana-Maria; Diculescu, Victor Constantin; Wyk, Juanita Van; Iwuoha, Emmanuel; Baker, Priscilla; Mapolie, SelwynThe adsorption and the redox processes of two first-generation salicylaldiamine dendritic ligands and their copper, cobalt and nickel metallo-functionalized complexes have been studied at two types of carbon electrode surface. Glassy carbon (GC) was used in an electrochemistry study and highly oriented pyrolitic graphite (HOPG) in ex situ atomic force microscopy (AFM) imaging. All salicylaldimine ligands and th...
Poly(glutamic acid) nanofibre modified glassy carbon electrode: Characterizatio...
Santos, Daniela Pereira; Zanoni, Maria Valnice Boldrin; Bergamini, Márcio Fernando; Chiorcea-Paquim, Ana-Maria; Diculescu, Victor ConstantinGlassy carbon electrodes (GCE) were modified with poly(glutamic acid) acid films prepared using three different procedures: glutamic acid monomer electropolymerization (MONO), evaporation of poly(glutamic acid) (PAG) and evaporation of a mixture of poly(glutamic acid)/glutaraldehyde (PAG/GLU). All three films showed good adherence to the electrode surface. The performance of the modified GCE was investigated by...
Palladium nanoparticles and nanowires deposited electrochemically: AFM and elec...
Diculescu, Victor; Chiorcea-Paquim, Ana-Maria; Corduneanu, Oana; Oliveira-Brett, AnaAbstract Palladium nanoparticles and nanowires electrochemically deposited onto a carbon surface were studied using cyclic voltammetry, impedance spectroscopy and atomic force microscopy. The ex situ and in situ atomic force microscopy (AFM) topographic images showed that nanoparticles and nanowires of palladium were preferentially electrodeposited to surface defects on the highly oriented pyrolytic graphite s...
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