Abstract
The effects of cyclodestrins on the aggregation behavior and electrochpemical properties of N-ethyl-N prime -hexadecyl-4,4 prime -bipyridinium bromide (C//1//6VBr//2) and N-ethyl-N prime -bipyridinium bromide (C//1//8Br//2) were assessed by using electrochemical, optical, and surface tension techniques. The association constants of these two amphiphillic viologens with alpha - and beta -cyclodextrin (ACD and BCD) were determined by a condutance method. Values in the range 10**3-10**4 M** minus **1 were obtaiend for all four complexes. In the presence of ACD, the first reduction couple of both viologens exhibits reversible, diffusion-controlled voltammetric behavior. ACD also inhibits completely the formation of dimers from the corresponding cation radicals.
Original language | English (US) |
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Pages (from-to) | 3537-3542 |
Number of pages | 6 |
Journal | Journal of physical chemistry |
Volume | 92 |
Issue number | 12 |
DOIs | |
State | Published - Jan 1 1988 |
ASJC Scopus subject areas
- Engineering(all)
- Physical and Theoretical Chemistry