Citation: . THE ELECTROCHEMICAL PREPARATION OF POLYPHENOL WITH CONDUCTIBILITY*[J]. Chinese Journal of Polymer Science, ;2002, 20(4): 309-316. shu

THE ELECTROCHEMICAL PREPARATION OF POLYPHENOL WITH CONDUCTIBILITY*

Received Date: 26 February 2001
Revised Date: 11 June 2001

Polyphenol film deposited on platinum foil can continuously grow with time during the electrolysis of a phenolsolution consisting of 0. 1 mol L-1 phenol, 3 mol L-1 NaOH and 0.5 mol L-1 Na2SO4, as has been proved by the methods ofsweep potential, constant potential and constant current, and visible spectra during the electrolysis of phenol. A polyphenolfilm with thickness of 0.11 mm was obtained by the electrolysis of phenol at a constant potential of 0.70 V (versus Ag/AgCl with saturated KCl solution).Polyphenol film is inactive and stable in 2 mol L-1H2SO4 solution,neutral solution and 3 mol L-1 NaOH solution and in the potential range between -0.95 and 1.35 V.The usable potential range is dependent on the pH value.Polyphenol has an ESR signal with a g factor of 2.0049.The conductivity of polyphenol is 1.2×10-4 S cm-1.In the solution of polyphenol dissolved in DMSO,the mobility of polyphenol anions is 8×10-9m2s-1V-1 at 20℃.
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