Spectroelectrochemical study of poly-3,4-ethylenedioxythiophene films in the presence of different supporting electrolytes

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Spectroelectrochemical study of poly-3,4-ethylenedioxythiophene films in the presence of different supporting electrolytes. / Tolstopyatova, E. G.; Pogulaichenko, N. A.; Eliseeva, S. N.; Kondratiev, V. V.

в: Russian Journal of Electrochemistry, Том 45, № 3, 01.03.2009, стр. 252-262.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{3a80b28dbc6f4528acf8de2c2e55194a,

title = "Spectroelectrochemical study of poly-3,4-ethylenedioxythiophene films in the presence of different supporting electrolytes",

abstract = "Steady-state absorption spectra of poly-3,4-ethylenedioxythiophene (PEDOT) films at different oxidation degrees and their differential cyclic voltabsorptograms are studied in 0.1 M LiClO4, Bu4NBF 4, and Bu4NPF6 solutions in acetonitrile. Three major absorption bands are obtained in the film electronic spectra: a complex band with a pronounced maximum at λ = 600 nm that corresponds to π → πelectronic transitions in reduced fragments of a PEDOT film and two absorption bands (at λmax = 850 nm and λmax > 1100 nm) corresponding to two oxidized film fragments. It is shown that the position and shape of absorption bands are practically independent of the nature of dopant anions, which points to the absence of pronounced interactions with positively charged polymer fragments. An attempt is made to analyze the obtained spectroelectrochemical data qualitatively to estimate the extinction coefficients and concentrations of absorbing particles and their variation in the course of redox processes.",

keywords = "Conducting polymers, Cyclic voltammetry, Differential cyclic voltabsorptometry, Electronic spectroscopy, Poly-3,4-ethylenedioxythiophene",

author = "Tolstopyatova, {E. G.} and Pogulaichenko, {N. A.} and Eliseeva, {S. N.} and Kondratiev, {V. V.}",

year = "2009",

month = mar,

day = "1",

doi = "10.1134/S1023193509030033",

language = "English",

volume = "45",

pages = "252--262",

journal = "Russian Journal of Electrochemistry",

issn = "1023-1935",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "3",

}

RIS

TY - JOUR

T1 - Spectroelectrochemical study of poly-3,4-ethylenedioxythiophene films in the presence of different supporting electrolytes

AU - Tolstopyatova, E. G.

AU - Pogulaichenko, N. A.

AU - Eliseeva, S. N.

AU - Kondratiev, V. V.

PY - 2009/3/1

Y1 - 2009/3/1

N2 - Steady-state absorption spectra of poly-3,4-ethylenedioxythiophene (PEDOT) films at different oxidation degrees and their differential cyclic voltabsorptograms are studied in 0.1 M LiClO4, Bu4NBF 4, and Bu4NPF6 solutions in acetonitrile. Three major absorption bands are obtained in the film electronic spectra: a complex band with a pronounced maximum at λ = 600 nm that corresponds to π → πelectronic transitions in reduced fragments of a PEDOT film and two absorption bands (at λmax = 850 nm and λmax > 1100 nm) corresponding to two oxidized film fragments. It is shown that the position and shape of absorption bands are practically independent of the nature of dopant anions, which points to the absence of pronounced interactions with positively charged polymer fragments. An attempt is made to analyze the obtained spectroelectrochemical data qualitatively to estimate the extinction coefficients and concentrations of absorbing particles and their variation in the course of redox processes.

AB - Steady-state absorption spectra of poly-3,4-ethylenedioxythiophene (PEDOT) films at different oxidation degrees and their differential cyclic voltabsorptograms are studied in 0.1 M LiClO4, Bu4NBF 4, and Bu4NPF6 solutions in acetonitrile. Three major absorption bands are obtained in the film electronic spectra: a complex band with a pronounced maximum at λ = 600 nm that corresponds to π → πelectronic transitions in reduced fragments of a PEDOT film and two absorption bands (at λmax = 850 nm and λmax > 1100 nm) corresponding to two oxidized film fragments. It is shown that the position and shape of absorption bands are practically independent of the nature of dopant anions, which points to the absence of pronounced interactions with positively charged polymer fragments. An attempt is made to analyze the obtained spectroelectrochemical data qualitatively to estimate the extinction coefficients and concentrations of absorbing particles and their variation in the course of redox processes.

KW - Conducting polymers

KW - Cyclic voltammetry

KW - Differential cyclic voltabsorptometry

KW - Electronic spectroscopy

KW - Poly-3,4-ethylenedioxythiophene

UR - http://www.scopus.com/inward/record.url?scp=65449163492&partnerID=8YFLogxK

U2 - 10.1134/S1023193509030033

DO - 10.1134/S1023193509030033

M3 - Article

AN - SCOPUS:65449163492

VL - 45

SP - 252

EP - 262

JO - Russian Journal of Electrochemistry

JF - Russian Journal of Electrochemistry

SN - 1023-1935

IS - 3

ER -

ID: 53890749