Dynamic studies of conjugated polymers by phase-modulation IR-spectroscopy

    研究成果: Article

    4 引用 (Scopus)

    抄録

    The application of phase-modulation infrared spectroscopy to the photoexcitation dynamics of conjugated polymers is described. The modulation-frequency dependencies of the intensity and phase delay of photoinduced absorption have been observed and simulated numerically on the basis of a model based on second-order kinetics involving a neutralization process between the positive and negative charge carriers (polarons) that are formed from a photogenerated interchain charge-transfer exciton (polaron pair). The rate constant of the bimolecular recombination process has been obtained. This numerical simulation is useful in analyzing the observed responses of a nonlinear system in the phase-modulation measurements.

    元の言語English
    ページ(範囲)77-83
    ページ数7
    ジャーナルVibrational Spectroscopy
    19
    発行部数1
    出版物ステータスPublished - 1999 2

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    Conjugated polymers
    Phase modulation
    Infrared spectroscopy
    Gene Conversion
    Polarons
    Photoexcitation
    Frequency modulation
    Charge carriers
    Charge transfer
    Nonlinear systems
    Rate constants
    Kinetics
    Computer simulation
    LDS 751

    ASJC Scopus subject areas

    • Analytical Chemistry
    • Spectroscopy

    これを引用

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    abstract = "The application of phase-modulation infrared spectroscopy to the photoexcitation dynamics of conjugated polymers is described. The modulation-frequency dependencies of the intensity and phase delay of photoinduced absorption have been observed and simulated numerically on the basis of a model based on second-order kinetics involving a neutralization process between the positive and negative charge carriers (polarons) that are formed from a photogenerated interchain charge-transfer exciton (polaron pair). The rate constant of the bimolecular recombination process has been obtained. This numerical simulation is useful in analyzing the observed responses of a nonlinear system in the phase-modulation measurements.",
    keywords = "Conjugated polymers, Phase-modulation infrared spectroscopy, Photoexcitation dynamics",
    author = "Yukio Furukawa",
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    AB - The application of phase-modulation infrared spectroscopy to the photoexcitation dynamics of conjugated polymers is described. The modulation-frequency dependencies of the intensity and phase delay of photoinduced absorption have been observed and simulated numerically on the basis of a model based on second-order kinetics involving a neutralization process between the positive and negative charge carriers (polarons) that are formed from a photogenerated interchain charge-transfer exciton (polaron pair). The rate constant of the bimolecular recombination process has been obtained. This numerical simulation is useful in analyzing the observed responses of a nonlinear system in the phase-modulation measurements.

    KW - Conjugated polymers

    KW - Phase-modulation infrared spectroscopy

    KW - Photoexcitation dynamics

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