Electrochemical deposition of 5,10,15,20-tetrakis-(4-sulphonatophenyl) porphyrin and its Co(II) derivative at a gold microelectrode array
نویسندگان
چکیده
This paper describes the fabrication and surface modification of gold microelectrode array structures. The modification is done by continuous cycling of the electrode array in a pH 12 buffer solution containing 8.01 mmol L−1 5,10,15,20-tetrakis-(4-sulphonatophenyl)porphyrin tetrasodium salt (H2TSPor). Incorporation of gold ions in the ligand during the potential cycling of the gold electrode is assumed. Only ring processes appear in the current potential curves, which do not change with scan number, indicating a fast adsorption. A second modification was performed through the electrodeposition of 5,10,15,20-tetrakis-(4-sulphonatophenyl)porphyrin Co(II) (CoTSPor) at a gold micro-electrode array. © 2005 Elsevier B.V. All rights reserved.
منابع مشابه
Study of the deposition and characterisation of a 5,10,15,20-tetrakis-(4-sulphonatophenyl)porphyrin Co(II) layer at gold surfaces in alkaline solution
0 d In this paper, the electrodeposition of Co(II)TSPor at gold electrodes is described. It was found that this deposition is initially controlled y kinetic parameters leading to a nearly 100% coverage of the electrode surface. However, once formed a reorganisation of the layer occurs. xperimental evidence that Co(II)TSPor is deposited was provided by using Raman spectroscopy. 2005 Elsevier Ltd...
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