In:
Science, American Association for the Advancement of Science (AAAS), Vol. 275, No. 5302 ( 1997-02-14), p. 949-951
Abstract:
A cytochrome c oxidase model that consists of a cobalt(II) porphyrin with a copper(I) triazacyclononane macrocycle fastened on the distal face and an imidazole covalently attached to the proximal face has been synthesized and characterized. Redox titrations with molecular oxygen (O 2 ) and cobaltocene were carried out, and O 2 was found to bind irreversibly in a 1:1 ratio to the model compound. This O 2 adduct (a bridged peroxide) can be fully reduced to the deoxygenated form with four equivalents of cobaltocene. The model compound was adsorbed on an edge-plane graphite electrode, and rotating ring-disk voltammetry was used to monitor the electrocatalytic reduction of O 2 . Four-electron reduction of O 2 was observed at physiological pH.
Type of Medium:
Online Resource
ISSN:
0036-8075
,
1095-9203
DOI:
10.1126/science.275.5302.949
Language:
English
Publisher:
American Association for the Advancement of Science (AAAS)
Publication Date:
1997
detail.hit.zdb_id:
128410-1
detail.hit.zdb_id:
2066996-3
detail.hit.zdb_id:
2060783-0
SSG:
11
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