Modulating spectroelectrochemical properties of [Ni(salen)] polymeric films at molecular level

Tedim, João; Patrício, Sónia G.; Fonseca, Joel; Magalhães, Alexandre L.; Moura, Cláudia; Hillman, A. Robert; Freire, Cristina

doi:10.1016/j.synthmet.2011.01.014

Cited by 31 publications

(53 citation statements)

References 36 publications

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“…The doping level (n) values used for Γ determination were calculated from comparison of coulometric data for films deposition and cycling in 0.1 mol dm -3 LiClO4/CH3CN solution with the Pt electrode, as described in literature, 32,40 considering that the obtained n-values are valid for other electrode substrates; the n-values were found to be n = 0.69 and 0.08 for poly [1] and poly [2] …”

Section: Preparation and Characterization Of Polymeric Filmsmentioning

confidence: 99%

High-Performance Electrochromic Devices Based on Poly[Ni(salen)]-Type Polymer Films

Nunes¹,

Araújo²,

Fonseca

et al. 2016

ACS Appl. Mater. Interfaces

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We report the application of two poly [Ni(salen) was used to fabricate a solid state electrochromic device using lateral configuration with two figures of merit: a simple shape (typology 1) and a butterfly shape (typology 2); typology 1 showed the best performance with optical contrast ∆T = 88.7 % (at λ = 750 nm), colouration efficiency η = 130.4 cm 2 C -1 and charge loss of 37.0 % upon 3000 redox cycles.]

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Section: Preparation and Characterization Of Polymeric Filmsmentioning

confidence: 99%

High-Performance Electrochromic Devices Based on Poly[Ni(salen)]-Type Polymer Films

Nunes¹,

Araújo²,

Fonseca

et al. 2016

ACS Appl. Mater. Interfaces

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“…For subsequent studies it was established that eight potential cycles are sufficient to obtain a metallopolymeric structure with good ionic conductivity. Fig.2B shows one redox couple that occurs in the electropolymerization step and can be assigned to the Ni(II)/Ni(III) process [23,[32][33][34][35]. The anodic wave centered at approximately 0.72 V vs. SCE, associated with the Ni(II)/Ni(III) couple (Eq.…”

Section: Electropolymerization and Electrochemical Properties Of The mentioning

confidence: 99%

Mechanistic study of the formation of multiblock π-conjugated metallopolymer

et al. 2016

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Electropolymerization of a π-conjugated polymer from [N,N'-bis(salicylidene)-ophenylenediamine]nickel(II) complex ([Ni(salophen)]) on the surface of indium-tin-oxide (ITO) was studied. Two structures of the polymer have been proposed based on the theorem of molecular columns. The highlighted structures are the molecular column of the central aromatic rings (MCCAR) and molecular column of the side aromatic rings (MCSAR). The molecular structures were obtained by control of the potential scan rate in the electropolymerization step. The MCCAR structures are stable and structurally compact, whereas the MCSAR structures are less compact .Electrochemical measurements, atomic force microscopy (AFM), UV-Vis spectroscopy, FTIR Raman spectroscopy and optical microscopy support the formation of the multiblock π-conjugated polymer.

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“…Metal-based redox chemistry pertains to metal complexes in which the metal oxidizes at a less positive potential than the ligand; this is the case that has been seen for Co(II) and Fe(II) salen complexes. 67 3.5.2. Electrocatalytic Oxidation of Aliphatic Alcohols at Ni II {salnptn(4-OH) 2 }-Y/CPE.…”

Section: Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

DFT and Experimental Study of the Host–Guest Interactions Effect on the Structure, Properties, and Electro-Catalytic Activities of N₂O₂–Ni(II) Schiff-Base Complexes Incorporated into Zeolite

et al. 2012

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Ni II -(N,N′-bis(2,4-dihydroxyacetophenone)-2,2-dimethylpropandiimine (Ni II {salnptn(4-OH) 2 }) complex has been encapsulated within the supercage of zeolite-NaY by reacting Ni 2+ -exchanged NaY with the flexible Schiff-base ligand that diffuses into the cavities. The encapsulated complex is characterized by EDX, scanning electron microscopy, powder X-ray diffraction, FT-IR, and cyclic voltammetry studies. Density functional calculation is being carried out on both the free nickel Schiff-base complex and that encapsulated in NaY zeolite to investigate changes in structural parameters, energies of the HOMO and LUMO, and absolute hardness and softness. Electrochemical properties of the NaY zeoliteencapsulated Ni II {salnptn(4-OH) 2 }-modified carbon paste electrode and the Pt electrode modified with the film derived from the electro-polymerization of this complex are studied. These modified electrodes show electro-catalytic activity toward the oxidation of methanol and other short-chain aliphatic alcohols. The results show two different oxidation mechanisms on the surface of these modified electrodes. The effect of some parameters such as potential scan rate, concentration of alcohols, and the corresponding rate laws have been derived. Furthermore, the rate constants for the catalytic reaction (k′) of alcohols are obtained.

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Modulating spectroelectrochemical properties of [Ni(salen)] polymeric films at molecular level

Cited by 31 publications

References 36 publications

High-Performance Electrochromic Devices Based on Poly[Ni(salen)]-Type Polymer Films

High-Performance Electrochromic Devices Based on Poly[Ni(salen)]-Type Polymer Films

Mechanistic study of the formation of multiblock π-conjugated metallopolymer

DFT and Experimental Study of the Host–Guest Interactions Effect on the Structure, Properties, and Electro-Catalytic Activities of N₂O₂–Ni(II) Schiff-Base Complexes Incorporated into Zeolite

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Modulating spectroelectrochemical properties of [Ni(salen)] polymeric films at molecular level

Cited by 31 publications

References 36 publications

High-Performance Electrochromic Devices Based on Poly[Ni(salen)]-Type Polymer Films

High-Performance Electrochromic Devices Based on Poly[Ni(salen)]-Type Polymer Films

Mechanistic study of the formation of multiblock π-conjugated metallopolymer

DFT and Experimental Study of the Host–Guest Interactions Effect on the Structure, Properties, and Electro-Catalytic Activities of N2O2–Ni(II) Schiff-Base Complexes Incorporated into Zeolite

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DFT and Experimental Study of the Host–Guest Interactions Effect on the Structure, Properties, and Electro-Catalytic Activities of N₂O₂–Ni(II) Schiff-Base Complexes Incorporated into Zeolite