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Layer by Layer Electrode Surface Functionalisation Using Carbon Nanotubes, Electrochemical Grafting of Azide‐Alkyne Functions and Click Chemistry
Author(s) -
Coates Megan,
Griveau Sophie,
Bedioui Fethi,
Nyokong Tebello
Publication year - 2012
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201200240
Subject(s) - click chemistry , azide , carbon nanotube , covalent bond , ferrocene , electrochemistry , glassy carbon , electrode , chemistry , adsorption , inorganic chemistry , layer (electronics) , materials science , surface modification , polymer chemistry , chemical engineering , organic chemistry , nanotechnology , cyclic voltammetry , engineering
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.