Electrochemical ESR and voltammetric studies of lithium ion pairing with electrogenerated 9,10-anthraquinone radical anions either free in acetonitrile solution or covalently bound to multiwalled carbon nanotubes

Andrew J. Wain; Gregory G. Wildgoose; Charles G. R. Heald; Li Jiang; Timothy G. J. Jones; Richard G. Compton

doi:10.1021/jp040552u

Electrochemical ESR and voltammetric studies of lithium ion pairing with electrogenerated 9,10-anthraquinone radical anions either free in acetonitrile solution or covalently bound to multiwalled carbon nanotubes

Andrew J. Wain, Gregory G. Wildgoose, Charles G. R. Heald, Li Jiang, Timothy G. J. Jones, Richard G. Compton

Research output: Contribution to journal › Article › peer-review

76 Citations (Scopus)

Abstract

The influence of Li ion pairing on the voltammetric redn. of anthraquinone in MeCN is reported. On Au electrodes, the single electron redn. generates a radical anion which forms a complex with Li cations from the electrolyte. In situ ESR studies support this finding, and signal intensity measurements are used to est. a value for the complexation equil. const. Values calcd. were of the of the order of 6000 mol-1 dm3. Potential shift measurements and Digisim modeling are in support of a complexation mechanism in which a little of the complex ppts. on the electrode surface. The effect of Li ion pairing is also demonstrated for the case in which 1-anthraquinonyl groups are covalently attached to multiwalled C nanotubes abrasively immobilized on a basal plane pyrolytic graphite electrode. [on SciFinder(R)]

Original language	English
Pages (from-to)	3971-3978
Number of pages	8
Journal	The Journal of Physical Chemistry B
Volume	109
Issue number	9
DOIs	https://doi.org/10.1021/jp040552u
Publication status	Published - 2005

Keywords

covalently bound anthraquinone radical multiwalled carbon nanotube lithium pairing
ESR voltammetry lithium ion pairing electrogenerated anthraquinone radical anion

Access to Document

10.1021/jp040552u

Cite this

Wain, A. J., Wildgoose, G. G., Heald, C. G. R., Jiang, L., Jones, T. G. J., & Compton, R. G. (2005). Electrochemical ESR and voltammetric studies of lithium ion pairing with electrogenerated 9,10-anthraquinone radical anions either free in acetonitrile solution or covalently bound to multiwalled carbon nanotubes. The Journal of Physical Chemistry B, 109(9), 3971-3978. https://doi.org/10.1021/jp040552u

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title = "Electrochemical ESR and voltammetric studies of lithium ion pairing with electrogenerated 9,10-anthraquinone radical anions either free in acetonitrile solution or covalently bound to multiwalled carbon nanotubes",

abstract = "The influence of Li ion pairing on the voltammetric redn. of anthraquinone in MeCN is reported. On Au electrodes, the single electron redn. generates a radical anion which forms a complex with Li cations from the electrolyte. In situ ESR studies support this finding, and signal intensity measurements are used to est. a value for the complexation equil. const. Values calcd. were of the of the order of 6000 mol-1 dm3. Potential shift measurements and Digisim modeling are in support of a complexation mechanism in which a little of the complex ppts. on the electrode surface. The effect of Li ion pairing is also demonstrated for the case in which 1-anthraquinonyl groups are covalently attached to multiwalled C nanotubes abrasively immobilized on a basal plane pyrolytic graphite electrode. [on SciFinder(R)]",

keywords = "covalently bound anthraquinone radical multiwalled carbon nanotube lithium pairing, ESR voltammetry lithium ion pairing electrogenerated anthraquinone radical anion",

author = "Wain, {Andrew J.} and Wildgoose, {Gregory G.} and Heald, {Charles G. R.} and Li Jiang and Jones, {Timothy G. J.} and Compton, {Richard G.}",

year = "2005",

doi = "10.1021/jp040552u",

language = "English",

volume = "109",

pages = "3971--3978",

journal = "Journal of Physical Chemistry B",

issn = "1520-6106",

publisher = "American Chemical Society",

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}

Wain, AJ, Wildgoose, GG, Heald, CGR, Jiang, L, Jones, TGJ & Compton, RG 2005, 'Electrochemical ESR and voltammetric studies of lithium ion pairing with electrogenerated 9,10-anthraquinone radical anions either free in acetonitrile solution or covalently bound to multiwalled carbon nanotubes', The Journal of Physical Chemistry B, vol. 109, no. 9, pp. 3971-3978. https://doi.org/10.1021/jp040552u

Electrochemical ESR and voltammetric studies of lithium ion pairing with electrogenerated 9,10-anthraquinone radical anions either free in acetonitrile solution or covalently bound to multiwalled carbon nanotubes. / Wain, Andrew J.; Wildgoose, Gregory G.; Heald, Charles G. R. et al.

In: The Journal of Physical Chemistry B, Vol. 109, No. 9, 2005, p. 3971-3978.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Electrochemical ESR and voltammetric studies of lithium ion pairing with electrogenerated 9,10-anthraquinone radical anions either free in acetonitrile solution or covalently bound to multiwalled carbon nanotubes

AU - Wain, Andrew J.

AU - Wildgoose, Gregory G.

AU - Heald, Charles G. R.

AU - Jiang, Li

AU - Jones, Timothy G. J.

AU - Compton, Richard G.

PY - 2005

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N2 - The influence of Li ion pairing on the voltammetric redn. of anthraquinone in MeCN is reported. On Au electrodes, the single electron redn. generates a radical anion which forms a complex with Li cations from the electrolyte. In situ ESR studies support this finding, and signal intensity measurements are used to est. a value for the complexation equil. const. Values calcd. were of the of the order of 6000 mol-1 dm3. Potential shift measurements and Digisim modeling are in support of a complexation mechanism in which a little of the complex ppts. on the electrode surface. The effect of Li ion pairing is also demonstrated for the case in which 1-anthraquinonyl groups are covalently attached to multiwalled C nanotubes abrasively immobilized on a basal plane pyrolytic graphite electrode. [on SciFinder(R)]

AB - The influence of Li ion pairing on the voltammetric redn. of anthraquinone in MeCN is reported. On Au electrodes, the single electron redn. generates a radical anion which forms a complex with Li cations from the electrolyte. In situ ESR studies support this finding, and signal intensity measurements are used to est. a value for the complexation equil. const. Values calcd. were of the of the order of 6000 mol-1 dm3. Potential shift measurements and Digisim modeling are in support of a complexation mechanism in which a little of the complex ppts. on the electrode surface. The effect of Li ion pairing is also demonstrated for the case in which 1-anthraquinonyl groups are covalently attached to multiwalled C nanotubes abrasively immobilized on a basal plane pyrolytic graphite electrode. [on SciFinder(R)]

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KW - ESR voltammetry lithium ion pairing electrogenerated anthraquinone radical anion

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