Voltammetric, EQCM, spectroscopic, and microscopic studies on the electrocrystallization of semiconducting, Phase I, CuTCNQ on carbon, gold, and platinum electrodes by a nucleation-growth process

Harris, A, Neufeld, A, O'Mullane, A, Bond, A and Morrison, R 2005, 'Voltammetric, EQCM, spectroscopic, and microscopic studies on the electrocrystallization of semiconducting, Phase I, CuTCNQ on carbon, gold, and platinum electrodes by a nucleation-growth process', Journal of the Electrochemical Society, vol. 152, pp. 577-577.


Document type: Journal Article
Collection: Journal Articles

Title Voltammetric, EQCM, spectroscopic, and microscopic studies on the electrocrystallization of semiconducting, Phase I, CuTCNQ on carbon, gold, and platinum electrodes by a nucleation-growth process
Author(s) Harris, A
Neufeld, A
O'Mullane, A
Bond, A
Morrison, R
Year 2005
Journal name Journal of the Electrochemical Society
Volume number 152
Start page 577
End page 577
Total pages 1
Publisher Electrochemical Society, Inc.
Abstract Cu 7,7,8,8-tetracyanoquinodimethane (CuTCNQ) may be chemically synthesized in two phases, one of which is significantly more conductive (phase I) than the other (phase II). Because CuTCNQ is sparingly soluble in acetonitrile, reduction of TCNQ to TCNQ- in the presence of CU(MeCN)+ under conditions where the solubility is exceeded in this solvent allows CuTCNQ nucleation-growth processes to occur at defect sites on carbon, gold, and platinum macro- and microdisk electrode surfaces. Rapid growth of large branched needle-shaped phase I crystals occurs on the time scale of cyclic voltammetry at semiconducting CuTCNQ nucleation sites. Infrared spectra and the crystal morphology detected by electron microscopy of electrocrystallized solid, are all consistent with growth of purely phase I CuTCNQ solid. The smaller crystals formed on the electrode surface, but not larger ones, may be stripped from the electrode surface by application of positive potentials. Mechanistic aspects of the electrocrystallization and stripping processes are considered.
Subject Electrochemistry
DOI - identifier 10.1149/1.19955047
ISSN 0013-4651
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