Spectroelectrochemical characterization (OMA and Raman) of sulfonic acids — doped polyanilines

Polyaniline films doped with camphorsulfonic acid (PANI-CSA) were prepared by electropolymerization and characterized by in situ Raman spectroscopy. Optical Multichannel Analysis (OMA) was used to characterize the changes of optical properties of PANI-CSA during the cycling in an electrochromic cell...

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Bibliographic Details
Published in:Synthetic metals 1997, Vol.84 (1), p.785-786
Main Authors: Bernard, Marie-Claude, Thi Bich, Vu, de Torresi, Susana Cordoba, Hugot-Le Goff, Anne
Format: Article
Language:English
Subjects:
Applied sciences
Camphorsulfonic acid
Chemical Sciences
Electrical, magnetic and optical properties
electrochemical polymerization
Electrochromic devices
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polyaniline
Properties and characterization
Raman spectroscopy
UV-vis-NTR absorption spectroscopy
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Summary:Polyaniline films doped with camphorsulfonic acid (PANI-CSA) were prepared by electropolymerization and characterized by in situ Raman spectroscopy. Optical Multichannel Analysis (OMA) was used to characterize the changes of optical properties of PANI-CSA during the cycling in an electrochromic cell. The properties of PANI-CSA colored in 1 M HCSA were compared with those of PANI-CSA and PANI colored in 1M HCl. The striking fact is the increase of the polaron band (isolated polaron at 2.95 eV) during the coloration of PANI-CSA in HCSA. Secondary doping of these films after dissolution in m-cresol can be obtained.
ISSN:0379-6779
1879-3290
DOI:10.1016/S0379-6779(96)04145-8