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Paper | Special issue | Vol 82, No. 1, 2010, pp.699-711
Published online, 5th August, 2010
DOI: 10.3987/COM-10-S(E)49
Immobilisation of the Vitamin B12 Derivative B12-Tyramide on Electrode Surfaces

Luisa M. Abrantes, Jorge P. Correia, Ana M. Tenreiro, and Reinhart Keese*

*Institut für Organische Chemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland


The hexamethyl cob(III)yrinic acid c-tyramide was prepared for its immobilisation on electrodes. The electropolymerisation of this compound onto Pt and glassy carbon electrodes was successful and details of these reactions were explored. The grafting procedure, in which tyramine was first electropolymerized on the electrode followed by the electro-oxidative attachment of the B12-tyramide provided a further method for this immobilisation. Exploratory experiments for the electrocatalytic activity of these coated electrodes are reported.