Application of in situ UV-VIS spectroscopy and an in situ dc resistance measurement technique to the study of a poly(thiophene-3-methanol) film

Eeva Lankinen, Maija Pohjankallio, Göran Sundholm (Corresponding Author), Panu Talonen, Timo Laitinen, Timo Saario

    Research output: Contribution to journalArticleScientificpeer-review

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    Abstract

    The evolution of the UV-vis optical absorption of poly(thiophene-3-methanol) (PTM) has been followed as a function of applied potential in Bu4NClO4 and Bu4NPF6 in acetonitrile. The UV-vis spectra at 310 to 820 nm show similar features to many polythiophenes of higher degrees of conjugation. The behaviour of the absorbance maxima corresponding to interband transition and (bi)polaron bands have also been registered during linear sweeps and potential step measurements in order to characterize the response of the PTM to applied potential, and the recovery of the polymer film during reduction. The evolution of the absorbance shows differences in the behaviour of the films synthesized and studied in the presence of the two anions. These correlate with our previous in situ FTIR measurements. The study of a conductive polymer by the newly developed contact electric resistance (CER) technique is reported for the first time. This in situ dc resistance measurement technique has been applied for determining the behaviour of the resistance of PTM during linear sweep measurements as well as for estimation of the maximum conductivity of the PTM, which was about 10−4 S/cm. The results obtained by UV-vis spectroscopy and CER technique are compared.

    Original languageEnglish
    Pages (from-to)167 - 174
    Number of pages8
    JournalJournal of Electroanalytical Chemistry
    Volume437
    Issue number1-2
    DOIs
    Publication statusPublished - 1997
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Pulse time modulation
    Thiophenes
    Thiophene
    Ultraviolet spectroscopy
    Methanol
    Electric contacts
    Gene Conversion
    Polymers
    Acetonitrile
    Polymer films
    Light absorption
    Anions
    Negative ions
    Recovery

    Cite this

    Lankinen, Eeva ; Pohjankallio, Maija ; Sundholm, Göran ; Talonen, Panu ; Laitinen, Timo ; Saario, Timo. / Application of in situ UV-VIS spectroscopy and an in situ dc resistance measurement technique to the study of a poly(thiophene-3-methanol) film. In: Journal of Electroanalytical Chemistry. 1997 ; Vol. 437, No. 1-2. pp. 167 - 174.
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    abstract = "The evolution of the UV-vis optical absorption of poly(thiophene-3-methanol) (PTM) has been followed as a function of applied potential in Bu4NClO4 and Bu4NPF6 in acetonitrile. The UV-vis spectra at 310 to 820 nm show similar features to many polythiophenes of higher degrees of conjugation. The behaviour of the absorbance maxima corresponding to interband transition and (bi)polaron bands have also been registered during linear sweeps and potential step measurements in order to characterize the response of the PTM to applied potential, and the recovery of the polymer film during reduction. The evolution of the absorbance shows differences in the behaviour of the films synthesized and studied in the presence of the two anions. These correlate with our previous in situ FTIR measurements. The study of a conductive polymer by the newly developed contact electric resistance (CER) technique is reported for the first time. This in situ dc resistance measurement technique has been applied for determining the behaviour of the resistance of PTM during linear sweep measurements as well as for estimation of the maximum conductivity of the PTM, which was about 10−4 S/cm. The results obtained by UV-vis spectroscopy and CER technique are compared.",
    author = "Eeva Lankinen and Maija Pohjankallio and G{\"o}ran Sundholm and Panu Talonen and Timo Laitinen and Timo Saario",
    year = "1997",
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    Application of in situ UV-VIS spectroscopy and an in situ dc resistance measurement technique to the study of a poly(thiophene-3-methanol) film. / Lankinen, Eeva; Pohjankallio, Maija; Sundholm, Göran (Corresponding Author); Talonen, Panu; Laitinen, Timo; Saario, Timo.

    In: Journal of Electroanalytical Chemistry, Vol. 437, No. 1-2, 1997, p. 167 - 174.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Application of in situ UV-VIS spectroscopy and an in situ dc resistance measurement technique to the study of a poly(thiophene-3-methanol) film

    AU - Lankinen, Eeva

    AU - Pohjankallio, Maija

    AU - Sundholm, Göran

    AU - Talonen, Panu

    AU - Laitinen, Timo

    AU - Saario, Timo

    PY - 1997

    Y1 - 1997

    N2 - The evolution of the UV-vis optical absorption of poly(thiophene-3-methanol) (PTM) has been followed as a function of applied potential in Bu4NClO4 and Bu4NPF6 in acetonitrile. The UV-vis spectra at 310 to 820 nm show similar features to many polythiophenes of higher degrees of conjugation. The behaviour of the absorbance maxima corresponding to interband transition and (bi)polaron bands have also been registered during linear sweeps and potential step measurements in order to characterize the response of the PTM to applied potential, and the recovery of the polymer film during reduction. The evolution of the absorbance shows differences in the behaviour of the films synthesized and studied in the presence of the two anions. These correlate with our previous in situ FTIR measurements. The study of a conductive polymer by the newly developed contact electric resistance (CER) technique is reported for the first time. This in situ dc resistance measurement technique has been applied for determining the behaviour of the resistance of PTM during linear sweep measurements as well as for estimation of the maximum conductivity of the PTM, which was about 10−4 S/cm. The results obtained by UV-vis spectroscopy and CER technique are compared.

    AB - The evolution of the UV-vis optical absorption of poly(thiophene-3-methanol) (PTM) has been followed as a function of applied potential in Bu4NClO4 and Bu4NPF6 in acetonitrile. The UV-vis spectra at 310 to 820 nm show similar features to many polythiophenes of higher degrees of conjugation. The behaviour of the absorbance maxima corresponding to interband transition and (bi)polaron bands have also been registered during linear sweeps and potential step measurements in order to characterize the response of the PTM to applied potential, and the recovery of the polymer film during reduction. The evolution of the absorbance shows differences in the behaviour of the films synthesized and studied in the presence of the two anions. These correlate with our previous in situ FTIR measurements. The study of a conductive polymer by the newly developed contact electric resistance (CER) technique is reported for the first time. This in situ dc resistance measurement technique has been applied for determining the behaviour of the resistance of PTM during linear sweep measurements as well as for estimation of the maximum conductivity of the PTM, which was about 10−4 S/cm. The results obtained by UV-vis spectroscopy and CER technique are compared.

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    DO - 10.1016/S0022-0728(97)00350-1

    M3 - Article

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    JO - Journal of Electroanalytical Chemistry

    JF - Journal of Electroanalytical Chemistry

    SN - 1572-6657

    IS - 1-2

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