Synthesis of sulfonated polyaniline by polymerization of the aniline heterodimer 4-aminodiphenylamine-2-sulfonic acid

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• 作者：Royappa ; A. Timothy ; Steadman ; Dewey D. ; Tran ; Thuan L. ; Nguyen ; Philan T. ; Prayaga ; Chandra S. ; et. al.
• 关键词：Sulfonated polyaniline ; 4-Aminodiphenylamine-2-sulfonic acid ; Conducting polymer ; Synthesis ; Conductivity
• 刊名：Synthetic Metals
• 出版年：2001
• 出版时间：September 4, 2001
• 年：2001
• 卷：123
• 期：2
• 页码：273-277
• 全文大小：116 K

文摘

The aniline heterodimer 4-aminodiphenylamine-2-sulfonic acid has been polymerized in aqueous ammonium persulfate solution to yield a new form of sulfonated polyaniline (SPAn). This polymer, obtained as a green powder, is soluble in aqueous base (violet solution) and polar solvents (green solution, turning blue on standing). Its FTIR, UV–VIS and EPR spectra are quite similar to those of SPAn obtained by direct ring-sulfonation of polyaniline. The room temperature dc conductivity of the polymer is about 1.3×10⁻⁵S/cm, indicative of considerable disorder in the sample. Cyclic voltammetry in 1.0M HCl shows two redox peaks at E_1/2,1