COMPLEXATION OF REDOX-ACTIVE SURFACTANTS BY CYCLODEXTRINS.

Abigail Diaz, Pablo A. Quintela, Jodi M. Schuette, Angel E. Kaifer

Research output: Contribution to journalArticle

78 Scopus citations

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 languageEnglish (US)
Pages (from-to)3537-3542
Number of pages6
JournalJournal of physical chemistry
Volume92
Issue number12
DOIs
StatePublished - Jan 1 1988

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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