Unusual electrochemical properties of unsymmetric viologen dendrimers

Winston Ong, Angel Kaifer

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

A new series of redox-active dendrimers containing a single 4,4′-bipyridinium (viologen) group covalently attached to the focal point of Newkome-type dendrons (first to third generation) has been prepared and characterized. The electrochemical properties of these unsymmetric dendrimers show two unusual aspects. First, the electrochemical kinetics for viologen reduction remains fast from the first to the third dendrimer generation. Second, the values of the half-wave potentials reveal that dendrimer growth favors the generation of positive charge in the viologen residue in CH2Cl2, THF, and CH3CN solutions, while slightly disfavors it in DMSO.

Original languageEnglish
Pages (from-to)9358-9359
Number of pages2
JournalJournal of the American Chemical Society
Volume124
Issue number32
DOIs
StatePublished - Aug 14 2002

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Viologens
Dendrimers
Electrochemical properties
Dimethyl Sulfoxide
Oxidation-Reduction
Kinetics
Growth

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Unusual electrochemical properties of unsymmetric viologen dendrimers. / Ong, Winston; Kaifer, Angel.

In: Journal of the American Chemical Society, Vol. 124, No. 32, 14.08.2002, p. 9358-9359.

Research output: Contribution to journalArticle

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