Solid state voltammetry of an anthraquinone molten salt

Mary Elizabeth Williams, Royce W. Murray

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The solid-state voltammetries of the two reduction steps of a novel redox polyether hybrid - an anthraquinone molten salt (triethyl(MePEG350)ammonium anthraquinone sulfonate, (Et3NMePEG350+)(AQSO3-)) - and its disulfonated analogue, are reported. Multiple effects on charge transport rates are encountered. Currents for the first reduction step are enhanced by electron self-exchange charge transport, whereas currents for the second reduction wave are greater than 10-fold smaller. The relative charge transport rates of the two reductions are examined as a function of temperature and of incrementally replacing the AQSO3- anion in the melt with the electroinactive BF4- anion. An analysis that includes ionic conductivity measurements shows that the apparent charge transport rate of the second anthraquinone reduction is attenuated primarily as a result of ionic migration of the products of comproportionation reactions occurring in the diffusion layer.

Original languageEnglish (US)
Pages (from-to)10221-10227
Number of pages7
JournalJournal of Physical Chemistry B
Volume103
Issue number46
StatePublished - Nov 18 1999

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Anthraquinones
anthraquinones
molten salts
Voltammetry
Molten materials
Salts
Charge transfer
solid state
sulfonates
Ammonium Compounds
Anions
Negative ions
anions
Polyethers
Ionic conductivity
charge exchange
ion currents
Ion exchange
analogs
Electrons

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

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Solid state voltammetry of an anthraquinone molten salt. / Williams, Mary Elizabeth; Murray, Royce W.

In: Journal of Physical Chemistry B, Vol. 103, No. 46, 18.11.1999, p. 10221-10227.

Research output: Contribution to journalArticle

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