Electrocrystallization of phase I CuTCNQ on semiconducting boron doped diamond and indium tin oxide electrodes

O'Mullane, A, Neufeld, A, Harris, A and Bond, A 2006, 'Electrocrystallization of phase I CuTCNQ on semiconducting boron doped diamond and indium tin oxide electrodes', Special Electrochemistry Issue of Langmuir, vol. 22, no. 25, pp. 10499-10499.


Document type: Journal Article
Collection: Journal Articles

Title Electrocrystallization of phase I CuTCNQ on semiconducting boron doped diamond and indium tin oxide electrodes
Author(s) O'Mullane, A
Neufeld, A
Harris, A
Bond, A
Year 2006
Journal name Special Electrochemistry Issue of Langmuir
Volume number 22
Issue number 25
Start page 10499
End page 10499
Total pages 1
Publisher American Chemical Society
Abstract The electrochemical reduction of TCNQ to TCNQ.- in acetonitrile in the presence of [Cu(MeCN)4]+ has been undertaken at boron-doped diamond (BDD) and indium tin oxide (ITO) electrodes. The nucleation and growth process at BDD is similar to that reported previously at metal electrodes. At an ITO electrode, the electrocrystallization of more strongly adhered, larger, branched, needle-shaped phase I CuTCNQ crystals is detected under potential step conditions and also when the potential is cycled over the potential range of 0.7 to -0.1 V versus Ag/AgCl (3 M KCl). Video imaging can be used at optically transparent ITO electrodes to monitor the growth stage of the very large branched crystals formed during the course of electrochemical experiments. Both in situ video imaging and ex situ X-ray diffraction and scanning electron microscopy (SEM) data are consistent with the nucleation of CuTCNQ taking place at a discrete number of preferred sites on the ITO surface. At BDD electrodes, ex situ optical images show that the preferential growth of CuTCNQ occurs at the more highly conducting boron-rich areas of the electrode, within which there are preferred sites for CuTCNQ formation.
Subject Electrochemistry
DOI - identifier 10.1021/la060408v
Copyright notice © 2006 American Chemical Society.
ISSN 0743-7463
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