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Title
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Role of gold adatoms in the stability and electrochemical behavior of gold surfaces modified with phthalocyanines
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Author
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Abstract
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| This paper describes the role of adatoms in the electrochemical behavior of gold electrodes modified with metal ion tetrasulphonated phthalocyanines (MTSPc). After electrodeposition of MTSPc (M = Cu(II), Fe(III), Co(II), and Al(III)) the long-term stability of the modified electrodes was investigated. It took about 1000 scans before the electrode showed a constant behavior. During the scanning the MTSPc adsorption peak potentials shifted from their initial value to a value of 0.36 V vs. SCE, which is related to the redox reactions of the gold adatoms. After a long scanning procedure, the amount of these adatoms increases and controls the redox reactions of the deposited MTSPc. |
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Language
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English
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Source (journal)
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Electrochemical and solid-state letters / Electrochemical Society [New York, N.Y.] - Pennington, N.J.
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Publication
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Pennington, N.J.
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2005
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ISSN
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1099-0062
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DOI
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10.1149/1.1870653
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Volume/pages
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8
:4
(2005)
, p. C65-C68
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ISI
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000228326500018
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Full text (Publisher's DOI)
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