Synthesis, characterization and electropolymerization of a new polypyrrole iron(II) Schiff-base complex

Júnior, Glaico Chiericato; Silva, Ana Paula Saldanha; Guinesi, Luciana Simionatto

doi:10.1016/j.poly.2004.04.029

Cited by 24 publications

(8 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results show a decrease in roughness, a homogeneous and uniform polymer film was obtained. Similar results are reported in the literature(Junior et al, 2004). Thus, the difference of average roughness shown inFigure3 (A and B images) indicates obviously that a thicker film of poly-(Ni II -DHS) was effectively formed by electropolymerization of Ni(II)-DHS monomer.…”

supporting

confidence: 89%

“…The data of these analyses (Table 1) corroborate with the molecular structure proposed in Figure 1. (Junior et al, 2004;Cataldi et al, 1996;Yang et al, 2006;Bard and Faulkner, 2002;Vermillion and Pearl, 1964). The mechanism of the film formation is probably the same as in the case of the free ligand but the incorporation of Ni 2+ into the structure makes the film conductive and favorites the growth of a multilayer system.…”

Section: Identification Of the [Ni II -Dhs] 2+ Complexmentioning

confidence: 98%

See 1 more Smart Citation

Elaboration of modified poly(Ni II -DHS) films as electrodes by the electropolymerization of Ni(II)-[5,5′-dihydroxysalen] onto indium tin oxide surface and study of their electrocatalytic behavior toward aliphatic alcohols

Ourari

Ketfi

Zerroual

2017

Arabian Journal of Chemistry

View full text Add to dashboard Cite

Please cite this article as: A. Ourari, B. Ketfi, L. Zerroual, Elaboration of modified poly(Ni II -DHS) films as electrodes by the electropolymerization of Ni(II)-[5, 5'-dihydroxySalen] onto indium tin oxide surface and study of their electrocatalytic behavior towards aliphatic alcohols, Arabian Journal of Chemistry (2014), doi: http:// dx.Abstract Nickel (II)-DHS Complex was obtained from N,N'-bis(2,5-dihydroxybenzylidene)-1,2-diaminoethane (H 2 DHS) ligand and nickel acetate tetrahydrated in ethanolic solution with stirring under reflux. This complex, dissolved in an alkaline solution, was oxidized to form electroactive films strongly adhered on the ITO (Indium tin oxide) electrode surface. In this alkaline solution, the poly-[Ni II -DHS]/ITO films showed the typical voltammetric response of (Ni 2+ /Ni 3+ ) redox couple centers which are immobilized in the polymer-film. The modified electrodes (MEs) obtained were also characterized by several techniques such as scanning electronic microscopy, atomic force microscopy and electrochemical methods. The electrocatalytic behavior of these MEs towards the oxidation reaction of some aliphatic alcohols such as methanol, ethanol, 2-Methyl-1-propanol and isopropanol was investigated.The voltammograms recorded with these alcohols showed a good electrocatalytic efficiency.The electrocatalytic currents were at least 80 times higher than those obtained for the oxidation of methanol on electrodes modified with nickel hydroxide films in alkaline solutions. We noticed that these electrocatalytic currents are proportional to the concentration of methanol (0.050 to 0.30 µM). In contrast, those recorded for the oxidation of other aliphatic short chain alcohols such as ethanol, 2-Methyl-1-propanol and isopropanol are rather moderately weaker. In all cases the electrocatalytic currents presented a linear dependence with the concentration of alcohol. These modified electrodes could be applied as alcohol sensors.

show abstract

supporting

confidence: 89%

Section: Identification Of the [Ni II -Dhs] 2+ Complexmentioning

confidence: 98%

Elaboration of modified poly(Ni II -DHS) films as electrodes by the electropolymerization of Ni(II)-[5,5′-dihydroxysalen] onto indium tin oxide surface and study of their electrocatalytic behavior toward aliphatic alcohols

Ourari

Ketfi

Zerroual

2017

Arabian Journal of Chemistry

View full text Add to dashboard Cite

show abstract

“…It provides two-and three-dimensional topographic images of the PVC surface on irradiation (300 h). AFM is helpful to measure the pores size and roughness factor (Rq) of the PVC film [42]. The AFM images for PVC films (control; 40 µm thickness) and that contains Ph 3 SnL (0.5 wt %) as a photostabilizer after irradiation (300 h) are given in Figures 10 and 11, respectively.…”

Section: Surface Analysismentioning

confidence: 99%

Photostabilizing Efficiency of Poly(vinyl chloride) in the Presence of Organotin(IV) Complexes as Photostabilizers

2016

View full text Add to dashboard Cite

Three organotin complexes containing furosemide as a ligand (L), Ph 3 SnL, Me 2 SnL 2 and Bu 2 SnL 2 , were synthesized and characterized. Octahedral geometry was proposed for the Me 2 SnL 2 and Bu 2 SnL 2 , while the Ph 3 SnL complex has trigonal bipyramid geometry. The synthesized organotin complexes (0.5% by weight) were used as additives to improve the photostability of poly(vinyl chloride), PVC, (40 µm thickness) upon irradiation. The changes imposed on functional groups, weight loss and viscosity average molecular weight of PVC films were monitored. The experimental results show that the rate of photodegradation was reduced in the presence of the organotin additives. The quantum yield of the chain scission was found to be low (9.8 × 10 −7 ) when Ph 3 SnL was used as a PVC photostabilizer compared to controlled PVC (5.18 × 10 −6 ). In addition, the atomic force microscope images for the PVC films containing Ph 3 SnL 2 after irradiation shows a smooth surface compared to the controlled films. The rate of PVC photostabilization was found to be highest for Ph 3 SnL followed by Bu 2 SnL 2 and Me 2 SnL 2 . It has been suggested that the organotin complexes could act as hydrogen chloride scavengers, ultraviolet absorbers, peroxide decomposers and/or radical scavengers.

show abstract

“…The representative cross-sectional SEM image [ Fig. 3 (right)] clearly displays the granularly 3D morphology with a large number of channels and holes, indicating that the nuclei growth rates are essentially equal or comparable in directions parallel or perpendicular to the electrode surface [29].…”

mentioning

confidence: 99%

Electropolymerization and characterization of an alternatively conjugated donor–acceptor metallopolymer: Poly-[Ru(4′-(4-(Diphenylamino)phenyl)-2,2′:6′,2″-Terpyridine)2]2+

Qiu

Zhao

Bao

et al. 2011

Inorganic Chemistry Communications

View full text Add to dashboard Cite

Synthesis, characterization and electropolymerization of a new polypyrrole iron(II) Schiff-base complex

Cited by 24 publications

References 12 publications

Elaboration of modified poly(Ni II -DHS) films as electrodes by the electropolymerization of Ni(II)-[5,5′-dihydroxysalen] onto indium tin oxide surface and study of their electrocatalytic behavior toward aliphatic alcohols

Elaboration of modified poly(Ni II -DHS) films as electrodes by the electropolymerization of Ni(II)-[5,5′-dihydroxysalen] onto indium tin oxide surface and study of their electrocatalytic behavior toward aliphatic alcohols

Photostabilizing Efficiency of Poly(vinyl chloride) in the Presence of Organotin(IV) Complexes as Photostabilizers

Electropolymerization and characterization of an alternatively conjugated donor–acceptor metallopolymer: Poly-[Ru(4′-(4-(Diphenylamino)phenyl)-2,2′:6′,2″-Terpyridine)2]2+

Contact Info

Product

Resources

About