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Synthesis of conducting water‐soluble polyaniline with iron(III) porphyrin
Author(s) -
Nabid M. R.,
Sedghi R.,
Jamaat P. R.,
Safari N.,
Entezami A. A.
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24034
Subject(s) - polyaniline , polymerization , porphyrin , aniline , polymer chemistry , absorbance , cationic polymerization , materials science , polystyrene , aqueous solution , chemistry , photochemistry , organic chemistry , polymer , chromatography
The porphyrin‐catalyzed, template‐guided polymerization of aniline was carried out in an aqueous buffer solution. Hydrogen peroxide and iron(III) tetrasulfonated tetraphenyl porphyrin catalyzed the polymerization of aniline in the presence of sulfonated polystyrene as a template. The polymerization was carried out at different pHs ranging from 1 to 5. Ultraviolet–visible spectroscopy indicated the formation of a conducting form of polyaniline. The extent of the polymerization increased with decreasing pH of the solution. The maximum absorbance of the polaron band at 750 nm was obtained at pH 2, but when the polymerization was performed with pH 4, this band shifted to a longer wavelength. These results confirmed that a longer chain length of polyaniline was obtained with pH 4. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 2929–2934, 2006