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Polyaniline doped by a new class of dopants, benzoic acid and substituted benzoic acid: synthesis and characterization
Author(s) -
Amarnath C. A.,
Palaniappan S.
Publication year - 2005
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.591
Subject(s) - benzoic acid , polyaniline , dopant , materials science , thermogravimetric analysis , organic chemistry , nuclear chemistry , chemistry , polymer chemistry , doping , polymer , polymerization , optoelectronics
This work reports on a new class of dopants, benzoic acid and substituted benzoic acids such as 2‐hydroxybenzoic acid, 2‐chlorobenzoic acid, 4‐nitrobenzoic acid, 2‐methoxybenzoic acid, 3‐methylbenzoic acid, 4‐methylbenzoic acid, 3‐aminobenzoic acid and 4‐aminobenzoic acid, for polyaniline. Benzoic acids can be used to dope polyaniline by mixing benzoic acid (or a substituted benzoic acid) with polyaniline in the common solvent 1‐methyl‐2‐pyrrolidone. Properties of benzoic acid doped polyaniline salts are studied using Fourier transform infra‐red, X‐ray diffraction spectroscopy, scanning electron microscopy, thermogravimetric analysis and conductivity measurements. The conductivity of polyaniline‐benzoic acid salt was found to be high (10 −2 S/cm) when compared to polyaniline‐substituted benzoic acid salts (10 −3 –10 −5 S/cm). Copyright © 2005 John Wiley & Sons, Ltd.