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Chemical synthesis, characterization, and properties of conducting copolymers of imidazole and carbazole
Author(s) -
Raj V.,
Madheswari D.,
Mubarak Ali M.
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.32935
Subject(s) - copolymer , thermogravimetric analysis , polymerization , polymer chemistry , materials science , solubility , thermal stability , imidazole , carbazole , monomer , hildebrand solubility parameter , fourier transform infrared spectroscopy , chemistry , chemical engineering , organic chemistry , polymer , engineering , composite material
Conducting copolymers of imidazole and carbazole were chemically synthesized in various molar ratios of the imidazole and carbazole by chemical oxidative polymerization in acetonitrile medium using ammonium persulphate as oxidant. The selection and composition of solvent, concentration of the monomer, polymerization time, and temperature were optimized to obtain better quality and yield of the copolymers. The synthesized conducting copolymers were characterized by various techniques such as UV–visible, Fourier transform infrared, 1 H‐NMR, and X‐ray diffraction spectroscopy. The solubility of the copolymers was tested in various solvents. Their conductivity was tested at various temperatures. The thermodynamic stability of the copolymers was examined by differential scanning colorimetric and thermogravimetric analysis. The copolymers show comparatively higher conductivity, better solubility, and higher thermal stability than the homopolymer poly(carbazole) and lower than that of poly(imidazole). © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011