Abstract
The use of the channel flow cell for ultraviolet-visible (UV-vis) spectroelectrochemical experiments has been developed to determine the diffusion coefficients of electrogenerated species by means of monitoring the transient absorbance response resulting from a potential step at a working electrode immediately upstream of the incident spectrophotometric beam. The technique is applied to measure the diffusion coefficient of tris(4-bromophenyl)amine (TBPA) radical cation in acetonitrile at 25°C. It is shown that the diffusion coefficient of electrogenerated TBPA radical cation (1.64 ± 0.02 × 10-5 cm-2 s-1) is very close to that of the parent molecule (1.57 ± 0.03 × 10-5 cm2 s-1).
Original language | English |
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Pages (from-to) | 284-287 |
Number of pages | 4 |
Journal | Electroanalysis |
Volume | 9 |
Issue number | 4 |
DOIs | |
Publication status | Published - Mar 1997 |
Keywords
- Diffusion coefficient
- Spectroelectrochemistry
- Tris(4-bromophenyl)amine
ASJC Scopus subject areas
- Analytical Chemistry
- Electrochemistry