Reduction of 2,3,5-triphenyl-2H-tetrazolium chloride in the presence of polyelectrolytes containing 4-styrenesulfonate moieties

J Phys Chem B. 2008 May 1;112(17):5350-4. doi: 10.1021/jp712093v. Epub 2008 Apr 5.

Abstract

The redox behavior of 2,3,5-triphenyl-2H-tetrazolium chloride (TTC) in the presence of different polyelectrolytes such as poly(sodium 4-styrenesulfonate) (PSS), poly(sodium 4-styrenesulfonate-co-sodium maleate) at two different comonomer compositions (P(SS(1)-co-MA(1)) and P(SS(3)-co-MA(1))), poly(sodium acrylate-co-sodium maleate) (P(AA(1)-co-MA(1))), and poly(sodium acrylate) (PAA) is studied. Due to aromatic-aromatic interactions, the polyelectrolytes containing benzene sulfonate groups produce a decrease on the reduction rate of TTC in the presence of ascorbic acid (ASC) and a shift of the anodic and cathodic peaks to higher negative potentials for the electrochemical reaction of TTC. As an important conclusion, these effects are a function of the linear aromatic density of the polyelectrolytes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Ascorbic Acid / chemistry
  • Electrochemistry
  • Electrolytes / chemistry*
  • Hydrogen-Ion Concentration
  • Molecular Structure
  • Oxidation-Reduction
  • Polymers / chemistry*
  • Sulfonic Acids / chemistry*
  • Tetrazolium Salts / chemistry*

Substances

  • Electrolytes
  • Polymers
  • Sulfonic Acids
  • Tetrazolium Salts
  • triphenyltetrazolium
  • Ascorbic Acid
  • styrenesulfonic acid polymer