Oxidative formation of electroactive film from polypyridinyl complexes of ruthenium (II)-containing 3-(pyrrol-1-ylmethyl) pyridine

From Ruthenium Complexes to Novel Functional Nanocomposites: Development and Perspectives

“…[26] The preparation of a series of new electropolymerizable complexes with the general formula trans-[RuX2(L)4] was achieved. [27,28] The preparation and full characterization of poly-trans-[RuCl2(pmp)4] (pmp=3-(pyrrol-1-ylmethyl) pyridine) was reported and its applicability demonstrated in the preparation of modified electrodes. [27,29] In order to fully understand the electropolymerization process and to determine the optimized electrochemical parameters for the achievement of a good film, electrochemical studies were made on trans-[RuCl2 (pmp) 4].…”

“…In 1997, the preparation of electrodes modified by electropolymerization of poly-trans[RuCl2(pmp)4] using galvanostatic and potenciometric techniques was accomplished. [28] Studies show that water-soluble ruthenium complexes are of high therapeutic value due to their capacity to interfere with nitric oxide (NO) in biological systems. [30] On the other hand, the complex trans-[RuCl2(vpy)4] (vpy=4-vinylpyridine), [31] composed of four groups, which are easily polymerized producing electroactive adherent films, compared to films made from the linkers vinylpyridine and vinylterpyridine, were also prepared.…”

Study of Corrosion Resistance of Sintered Fe-2%Ni, Fe-5%Ni and Fe 10%Ni with Electroactive Polymeric Coating of Poly trans-[RuCl₂(vpy)₄]

“…Troch-Nagels et al [3] electrochemically deposited conducting polymers on mild steel by the electropolymerization. Our group has carried out numerous studies involving different surface treatments for conventional and sintered steels aiming at the protection against corrosion of these surfaces [9][10][11]. On analyzing previous results relating to the corrosion of sintered alloys Fe-(2, 5, 10%) Ni, we decided to study their behavior with and without polymeric coating using {trans-[RuCl 2 (vpy) 4 ]} as the monomer, where vpy=vinyl-4pyridine [10].…”

“…Our group has carried out numerous studies involving different surface treatments for conventional and sintered steels aiming at the protection against corrosion of these surfaces [9][10][11]. On analyzing previous results relating to the corrosion of sintered alloys Fe-(2, 5, 10%) Ni, we decided to study their behavior with and without polymeric coating using {trans-[RuCl 2 (vpy) 4 ]} as the monomer, where vpy=vinyl-4pyridine [10]. Initially, our studies concentrated on the synthesis of {trans-[RuCl 2 (pmp) 4 ]} where pmp= pyridine-4-methyl pyrrole [9], but the electropolymerization of these monomers occurs oxidatively and all attempts to modify the surface of active metals failed since the electropolymerization potential, being oxidative, coincides with the anodic dissolution of the metal.…”

Synthesis and Characterization of Nickel(II) and Palladium(II) Pyrrolyl Complexes and Their Polymerization to Electroactive Materials

“…A far more common strategy is to functionalize the pyrrole monomer at either the nitrogen or the 3-position, followed by chemical or electrochemical polymerization. Despite the fact that electronic and steric effects can interfere with the polymerization reaction and that substituted polypyrroles display reduced conductivity, a number of useful catalysts and sensors have been synthesized. ,− …”