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In this paper we have undertaken an ex-situ X-ray absorption near-edge spectroscopic (XANES) study of electrodes modified (ME) by polypyrrole films containing the metallic ions Cu(I) or Co(II), chelated, in each case, by two dpp units (dpp = 2,9-diphenyl-1,10-phenanthroline) immobilized in the polypyrrole matrix. From these XANES studies, we have evaluated the topography of the complexing cavities...
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