Acetanil/orthanilic acid self-doping conductive copolymer and synthesizing method
A technology of o-aminobenzenesulfonic acid and acetanilide, applied in the field of electrochemistry, can solve problems such as complicated experimental operation, and achieve the effects of wide application, high electrochemical activity and electrical conductivity
Inactive Publication Date: 2009-11-25
FUDAN UNIV
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Problems solved by technology
In China, the patent literature on self-doping polyaniline only has the publication number CN1802399, and the chemical copolymerization method is mainly used, and the experimental operation is relatively complicated.
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[0023] 1. Preparation of the electrolysis system
[0024] 1. Electrolyte preparation:
[0025] Electrolyte raw materials: acetanilide (recrystallized from ethanol before use), anthranilic acid and perchloric acid.
[0026] Electrolyte solution preparation: Add acetanilide and anthranilic acid to the perchloric acid solution, and stir with an electromagnetic stirrer until a homogeneous electrolyte is obtained. In the electrolyte, the concentration of acetanilide is 0.02-0.08mol / L, and the o-amino The concentration of benzenesulfonic acid is 0.05-0.15 mol / L, and the concentration of perchloric acid is 0.5-2 mol / L.
[0027] 2. Electrolytic cell preparation:
[0028] The electrolytic cell is a three-electrode electrolytic cell, which consists of a glassy carbon electrode as a working electrode, a platinum wire counter electrode and a saturated calomel electrode (SCE) (reference electrode).
[0029] Before electrolysis, the glassy carbon electrodes were sequentially coated with ...
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The invention relates to an acetanil / orthanilic acid self-doping conductive copolymer and a synthesizing method, synthesizing method, the copolymer has reversible oxidation-reduction characteristic, and the electric conductivity is 200-250 s / cm, and the structural formula is as shown in figure: in formula, R=COCH; in the electrolytic cell composed of glassy carbon electrode, platinum wire electrode and saturated calomel electrode, acetanil, orthanilic acid and perchloric acid are mixed into homogeneous phase electrolytic solution, wherein, acetanil is 0.02-0.08 mol / L, orthanilic acid is 0.05-0.15 mol / L, perchloric acid is 0.5-2 mol / L, and the electrolytic product is obtained on the glassy carbon electrode, and then is washed and vacuum dried. The copolymer provided by the invention has the advantages that: the copolymer not only has superior characteristic of poly acetanil, and the electrochemical activity of the copolymer in acidic solution is higher than that of acetanil, and high electrochemical activity and electroconductivity are kept in the pH 10.0 phosphates buffer solution still.
Description
technical field [0001] The invention relates to the field of electrochemistry, in particular to an acetanilide / anthranilate self-doping conductive copolymer and a synthesis method. Background technique [0002] Among conductive polymers, polyaniline has attracted much research attention because of its high electrical conductivity, good redox reversibility, rapid change of film color with potential, and good environmental stability. However, when the pH of the medium was >4, polyaniline almost lost its electrochemical activity, and the conductivity also became very low. This limits its application in secondary batteries, electrocatalysis, electrochromism, etc. to a certain extent. [0003] In 1990, Epstein synthesized self-doped polyaniline for the first time, because its surface ionizable and negatively charged functional groups can be self-doped, so its electrochemical activity and conductivity are compatible with external protons in a wide pH range. Intensity is irrel...
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Inventor 孔继烈姜春明陈惠汪嘉沁
Owner FUDAN UNIV