Mechanisms of Electropolymerization and Redox Activity: Fundamental Aspects

Vorotyntsev, Mikhail A.; Zinovyeva, Veronika A.; Конев, Д. В.

doi:10.1002/9783527630592.ch2

Cited by 22 publications

(13 citation statements)

References 57 publications

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“…Luego de esto se añade el monómero con el cual se piensa trabajar (EDOT 5mM) y según el intervalo de potencial hallado previamente se corre sendos CV con la finalidad de observar el comportamiento de nuestro monómero dentro de estos límites y de esta manera poder establecer los potenciales con los cuales podemos trabajar. La VE es de más o menos 4.5 V. La forma del primer CV muestra el típico comportamiento con un muy rápido incremento de la corriente anódica en el pico de oxidación del monómero [12] y observándose claramente el cruce de la curva en el barrido inverso debido al llamado "nucleation loop" que se origina por la nucleación del monómero sobre el electrodo desnudo [13]. Además, se tiene un potencial de pico de alrededor 1.375 V vs. Ag°/AgNO 3 (AgNO 3 0.01 M/ TBAP 0.1 M en AN, 0.47 V vs ENH).…”

Section: Resultados Y Discusiónunclassified

Electrodepósitos de Poli-3,4-etilendioxitiofeno sobre electrodos transparentes de Oxido de Indio y Estaño. Control del Espesor y Morfología.

Cando¹,

Hernández²,

Uribe³

2017

QUIMICA

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El presente estudio fue llevado a cabo con el motivo de obtener una curva que relacione la absorbancia (A) (a λ= 700 nm) con el espesor (L), obtenido directamente con la técnica de microscopía de fuerza atómica (AFM) en modo oscilante, de películas de poli-3,4-etilendioxitiofeno (PEDOT) depositado sobre electrodos transparentes de óxido de indio y estaño (ITO) mediante la técnica electroquímica de cronoamperometría (CA) a partir de una solución de EDOT 5 mM / Perclorato de tetrabutilamonio (TBAP) 0.1M en acetonitrilo anhidro (AN). Se determinó el intervalo de absorbancia donde se tienen espesores de PEDOT sobre ITO, requeridos para utilizarse como capa extractora de huecos en celdas orgánicas solares (OPVd) entre 30 y 60 nm. Se encontró que valores deA entre 0.1 a 0.2 dan como resultado películas de PEDOT del espesor requerido. La morfología de los distintos depósitos de PEDOT también fue analizada.

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Section: Resultados Y Discusiónunclassified

Electrodepósitos de Poli-3,4-etilendioxitiofeno sobre electrodos transparentes de Oxido de Indio y Estaño. Control del Espesor y Morfología.

Cando¹,

Hernández²,

Uribe³

2017

QUIMICA

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“…Such a material combining the capacity of certain carbon NPs to store electrons and that of certain organometallic species of high electronic stability to react fast under charge is certainly an attractive idea to test. This perspective [26][27][28] can be summarized by Scheme 8 where the association of carbon nanoparticles and alkyl ferrocene chains would give an open material allowing electrons to move fast through it in contact with a solvent and a suitable electrolyte. Further study in this direction is underway.…”

Section: Cathodic Behaviour Of Bis-(x-iodoalkyl)ferrocenesmentioning

confidence: 99%

Efficient grafting of redox-active ferrocene polymers from α,ω-diiodoalkanes at cathodically charged glassy carbon

Jouikov

Simonet

2012

J Appl Electrochem

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International audienceα,ω-Dihaloalkanes, when cathodically reduced at glassy carbon (GC), can be immobilized at the electrode surface. The present contribution focuses on the reduction of 1,8-diiodooctane, as model dihalo-substrate, in an aprotic organic solvent containing tetraalkylammonium salts as electrolyte. It is expected that these compounds in contact with GC, polarized at potentials more negative than −1.7 V versus Ag/AgCl, partly lead to monoiodoalkyl chain immobilization onto carbon. The process corresponds to the cathodic charge of graphitized and fullerenized zones present in carbon followed by a displacement reaction (analogous to a nucleophilic attack) towards pending C-I functions. This mode of grafting is then applied to the reaction of negatively charged carbon with bis-(ω-iodoalkyl)ferrocenes. Ferrocene is then used as an efficient redox probe. This study aims to point out the formation of a chemically grafted redox polymer at carbon electrodes that permits one to quantify the level of immobilized alkyl chains according to their chain length. Coverage levels were found to be high, and surface concentrations of ferrocene currently >10−8 mol cm−2 were reached. Ferrocene layers deposited onto carbon were found to be chemically and electrochemically stable and expected to be suitable for efficient electricity storag

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“…But if the anionic dopants are bulky molecules, the expulsion of these molecules cannot happen. In this case, the electroreduction of the polymer results mainly in the entrance of cationic pseudodopant in order to conserve the electroneutrality of the polymer [30]. This approach can be used for the development of cation selective sensors [31] (for instance, induce cation-selective recognition sites into PPy films).…”

Section: Introductionmentioning

confidence: 97%

Electrochemical synthesis of Alizarin Red S doped polypyrrole and its applications in designing a novel silver (I) potentiometric and voltammetric sensor

Rounaghi

Razavipanah

Vakili-Zarch

et al. 2015

Journal of Molecular Liquids

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Mechanisms of Electropolymerization and Redox Activity: Fundamental Aspects

Cited by 22 publications

References 57 publications

Electrodepósitos de Poli-3,4-etilendioxitiofeno sobre electrodos transparentes de Oxido de Indio y Estaño. Control del Espesor y Morfología.

Electrodepósitos de Poli-3,4-etilendioxitiofeno sobre electrodos transparentes de Oxido de Indio y Estaño. Control del Espesor y Morfología.

Efficient grafting of redox-active ferrocene polymers from α,ω-diiodoalkanes at cathodically charged glassy carbon

Electrochemical synthesis of Alizarin Red S doped polypyrrole and its applications in designing a novel silver (I) potentiometric and voltammetric sensor

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