Premium
Synthesis of polyaniline/polytoluidine block copolymer via the pernigraniline oxidation state
Author(s) -
Mattoso Luiz H. C.,
Oliveira Osvaldo N.,
Faria Roberto M.,
Manohar Sanjeev K.,
Epstein Arthur J.,
Macdiarmid Alan G.
Publication year - 1994
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1994.210350110
Subject(s) - polyaniline , copolymer , oxidation state , cyclic voltammetry , toluidine , polymer chemistry , aqueous solution , chemistry , gel permeation chromatography , materials science , electrochemistry , electrode , catalysis , organic chemistry , polymerization , polymer
Polyaniline was electrochemically synthesized in the emeraldine oxidation state and then converted to the pernigraniline oxidation state by applying an electric potential under optimized conditions. The stability/reactivity of polyaniline in the pernigraniline oxidation state was evaluated in various aqueous media. The products of the reduction of the pernigraniline oxidation state by o ‐toluidine were analyzed by gel permeation chromatography, ultraviolet–visible and infrared spectroscopies, and cyclic voltammetry. The results are consistent with the synthesis of a diblock copolymer of polyaniline/poly( o ‐toluidine) and also of some poly( o ‐toluidine) homopolymer in the emeraldine oxidation state as a side product.