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Voltammetric, chromatographic and mass spectral elucidation of the redox reactions of 1-hydroxypyrene occurring at a screen-printed carbon electrode

Honeychurch, Kevin C.; Hart, John P.; Kirsch, Nicole


Nicole Kirsch


The electrochemical oxidation of 1-hydroxypyrene (1-OHP) has been studied at a screen-printed carbon electrode (SPCE), by cyclic voltammetry and bulk electrolysis. Cyclic voltammograms exhibited two quasi-reversible pairs of peaks (designated 1a′/1c and 3a/3c) generated from the oxidation of the parent molecule. The nature of the redox reactions were further investigated by observing the effect of scan rate and pH on the voltammetric behaviour; the results suggested that the oxidation reactions giving rise to peaks 1a and 2a involved electrochemical-chemical-electrochemical (ECE) and EECE processes, respectively. Additional studies were carried out by HPLC and GC/MS and the results strongly indicated that the oxidation products were a mixture of several pyrene-quinones. In addition, liquid chromatography/mass spectroscopy (LC/MS) investigations showed that 1-OHP had undergone oxidation reactions to produce several dimers. © 2003 Elsevier Ltd. All rights reserved.

Journal Article Type Article
Publication Date Mar 15, 2004
Deposit Date Apr 12, 2011
Journal Electrochimica Acta
Print ISSN 0013-4686
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 49
Issue 7
Pages 1141-1149
Keywords 1-hydroxypyrene, screen-printed carbon electrode, LC/MS, GC/MS, dimer, quinones
Public URL
Publisher URL
Contract Date Nov 15, 2016