Layer by Layer Electrode Surface Functionalisation Using Carbon Nanotubes,Electrochemical Grafting of Azide‐Alkyne Functions and Click Chemistry |
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Authors: | Megan Coates Sophie Griveau Fethi Bedioui Tebello Nyokong |
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Institution: | 1. Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa;2. Chimie ParisTech, Unité Pharmacologie Chimique et Génétique et Imagerie, 75005 Paris, France;3. CNRS 8151, 75005 Paris, France;4. INSERM U 1022, 75005 Paris, France;5. Université Paris Descartes, 75006 Paris, France |
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Abstract: | Ferrocene was covalently bonded to a layer of adsorbed single‐walled carbon nanotubes on a glassy carbon electrode surface using electrochemical grafting and click chemistry. Grafting of the 4‐azidobenzenediazonium salt onto the surface was accomplished by electrochemical reduction. The surface‐bound azide groups, with the use of a copper(I) catalyst, were reacted with ethynylferrocene to form covalent 1,2,3‐triazole bonds by click chemistry. This layer by layer construction of the electrode surface results in stable electrodes by combining good electrical conductivity and increased surface area of the nanotubes with the versatility of the Sharpless click reaction. |
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Keywords: | Diazo compounds Carbon nanotubes Click chemistry Grafting X‐ray photoelectron spectroscopy |
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