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Electropolymerization and doping/dedoping properties of polyaniline thin films as studied by electrochemical-surface plasmon spectroscopy and by the quartz crystal microbalance

Baba, Akira ; Tian, Shengjun ; Stefani, Fernando ; Xia, Chuanjun ; Wang, Zhehui ; Advincula, Rigoberto C ; Johannsmann, Diethelm ; Knoll, Wolfgang

Journal of electroanalytical chemistry (Lausanne, Switzerland), 2004-01, Vol.562 (1), p.95-103 [Periódico revisado por pares]

Amsterdam: Elsevier B.V

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Título:
Electropolymerization and doping/dedoping properties of polyaniline thin films as studied by electrochemical-surface plasmon spectroscopy and by the quartz crystal microbalance
Autor: Baba, Akira ; Tian, Shengjun ; Stefani, Fernando ; Xia, Chuanjun ; Wang, Zhehui ; Advincula, Rigoberto C ; Johannsmann, Diethelm ; Knoll, Wolfgang
Assuntos: Applied sciences ; Complex dielectric constant ; Doping/de-doping ; Electrochromism ; Exact sciences and technology ; Organic polymers ; Physicochemistry of polymers ; Polyaniline thin film ; Polymerization ; Preparation, kinetics, thermodynamics, mechanism and catalysts ; Quartz crystal microbalance ; Surface plasmons
É parte de: Journal of electroanalytical chemistry (Lausanne, Switzerland), 2004-01, Vol.562 (1), p.95-103
Descrição: The electropolymerization and doping/dedoping properties of polyaniline ultrathin films on Au electrode surfaces were investigated by a combination of in situ electrochemical techniques, i.e., electrochemical surface plasmon spectroscopy (ESPR) and the electrochemical quartz crystal microbalance (EQCM). In the ESPR measurements, we employed two wavelengths, i.e., 632.8 and 1152 nm in order to distinguish independently the electrochromic behavior. In addition, we used spectroelectrochemical transmittance measurements in order to probe further the optical properties of the polymer films as a function of the applied potential. The real and imaginary parts of the dielectric constant of the polyaniline thin film at several doping levels was determined quantitatively by taking into consideration the thickness values obtained from the EQCM measurement. The combination of these two techniques provides a powerful method for probing the electrical, optical, and dielectric properties of conjugated ultrathin polymer films.
Editor: Amsterdam: Elsevier B.V
Idioma: Inglês

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Electropolymerization and doping/dedoping properties of polyaniline thin films as studied by electrochemical-surface plasmon spectroscopy and by the quartz crystal microbalance

Baba, Akira ; Tian, Shengjun ; Stefani, Fernando ; Xia, Chuanjun ; Wang, Zhehui ; Advincula, Rigoberto C ; Johannsmann, Diethelm ; Knoll, Wolfgang

Amsterdam: Elsevier B.V

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