Abstract
AbstractOxidative polymerization of aniline using the H2O2‐FeSO4 system gave polyaniline under mild conditions. The prepared powdery emeraldine base, a form of polyaniline, is blue black and shows high solubility in organic solvents (e.g., ca. 200 mg/mL in N‐methylpyrrolidone). The number‐average molecular weight (Mn) of the polymer obtained was 1,3–1,7 · 104 (via gel permeation chromatography vs. polystyrene) and Mw/Mn = 1,6–2,2. Poly(2‐ethylaniline) and poly‐(2‐propylaniline) with high molecular weights were also synthesized by this procedure in high yield.
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