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Synthesis and Electrochemical Study of a Functional Ionic Polymer
Author(s) -
Nagarale Rajaram K.,
Bhattacharya Bhaskar,
Jadhav Nitin A.,
Singh Pramod K.
Publication year - 2011
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201100145
Subject(s) - electrochemistry , redox , polymer chemistry , polymer , electrode , diffusion , ionic bonding , anode , chemistry , fourier transform infrared spectroscopy , horizontal scan rate , viologen , ionic conductivity , materials science , chemical engineering , cyclic voltammetry , inorganic chemistry , organic chemistry , ion , physics , engineering , thermodynamics , electrolyte
Viologen‐modified poly(vinylphosphonic acid) is synthesized by a simple EDC coupling reaction and characterized by FTIR and 1 H NMR spectroscopy. Electrochemical studies of the polymer are performed in solution and on a skin‐printed electrode, the latter after making a composite with TEOS. A first redox peak is found at E 0 = −0.57 V. The polymer is found to show diffusion‐confined phenomena in solution and surface‐confined phenomena on the electrode. On increasing the silica content, an increase in the resistivity of the film is found, which is reflected in an increase of the anodic‐to‐cathodic peak separation. From a plot of the current vs. the scan rate, the surface concentration of the redox‐active species is found to be 2.5 × 10 −10 mol · cm 2 .