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Redox Properties of Modified Poly-N,N'-bis(2-pyrrol-1-yl-propyl)-4,4'-Bipyridine Film Electrode
Redox Properties of Modified Poly-N,N'-bis(2-pyrrol-1-yl-propyl)-4,4'-Bipyridine Film Electrode
Journal of the Korean Chemical Society. 2001. Oct, 45(5): 429-435
  • Published : October 00, 2001
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Cha, Seong Keuck

Abstract
The monomer N,N'-bis(2-pyrrol-1-yl-propyl)-4,4'-bipyridine(bpb) was electrochemically polymerized on the glassy carbon electrode surface, which was modified with 1:1 ratio of erichrome black T(EBT) and glutathione(GSSG) to give a type of GC/poly-bpb, EBT, GSSG electrode for depositing Zn(II). The diffusion coefficients of the incorporated ions were 2.43${\times}10^{-15}$ and 9.14${\times}10^{-15} cm^2s^{-1}$ before taking Zn(II) ions and after them respectively. The modified electrodes are stable at the electrode process. The polymerized poly-bpb of 2.83${\times}10^4gmol^{-1}$ can deposit 2.15${\times}10^4gmol^{-1}$ of Zn(II). The number of pumping ions involving in the redox procedure at 0.77 V was 81.7% of the captured 180 ions into the polymer matrix, which was 3 times larger than that of the electrode modified with EBT alone.