Studies of o-Tolidine Attachment to Pyrolytic Graphite Electrodes via Cyanuric Chloride

Mino F. Dautartas, John F Evans, Theodore Kuwana

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

o-Tolidine, OT, which contains amino functional groups, was covalently attached to pyrolytic graphite electrodes via cyanuric chloride. These OT bound electrodes were examined by cyclic voltammetry and X-ray photoelectron spectroscopy, XPS. The cyclic voltammetric results for bound OT were similar to solution OT, although continual potential cycling produced changes in the XPS spectra which could be attributed to the presence and loss of some of the amine in the form of the hydrochloride salt. The bound OT was chemically stable to repeated potential scans from 0.0 to +0.8 V vs. SCE in acetonitrile solution. The surface coverages of OT from electrochemical and XPS data were estimated to be 2-5 X 10-11 mole/cm2.

Original languageEnglish (US)
Pages (from-to)104-110
Number of pages7
JournalAnalytical chemistry
Volume51
Issue number1
DOIs
StatePublished - Jan 1 1979

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