Graphite electrode with modified surface
First Claim
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1. An electrode for use in bioelectrochemistry, said electrode comprising:
- (a) a graphite surface, at least part of which is a planar surface at right angles to the direction of easy graphite cleavage; and
(b) complexes comprising Cr (III), said Cr (III) being attached to said electrode surface by covalent bonds to carbon-oxygen groups, and being capable of attachment by covalent bonds to a ligand that is biochemically active.
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Abstract
An electrode has a graphite surface at least part of which is an edge-plane graphite surface to which Cr(III) complexes are attached by surface C--O groups. The graphite can be polished pyrolytic graphite. The complex coverage can be 5-20%. The complex may comprise proteins, enzyme substrates, specific binding agents, intermediate metabolites or the like, e.g. the protein plastocyanin, so that direct unmediated electrochemistry is possible at the electrode.
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8 Claims
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1. An electrode for use in bioelectrochemistry, said electrode comprising:
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(a) a graphite surface, at least part of which is a planar surface at right angles to the direction of easy graphite cleavage; and (b) complexes comprising Cr (III), said Cr (III) being attached to said electrode surface by covalent bonds to carbon-oxygen groups, and being capable of attachment by covalent bonds to a ligand that is biochemically active. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification