scholarly journals Highly-Ordered Covalent Anchoring of Carbon Nanotubes on Electrode Surfaces by Diazonium Salt Reactions

2011 ◽  
Vol 50 (15) ◽  
pp. 3457-3461 ◽  
Author(s):  
Olimpia Arias de Fuentes ◽  
Tommaso Ferri ◽  
Marco Frasconi ◽  
Valerio Paolini ◽  
Roberto Santucci
Keyword(s):  
Carbon Nanotubes ◽  
Diazonium Salt ◽  
Electrode Surfaces

scholarly journals Highly-Ordered Covalent Anchoring of Carbon Nanotubes on Electrode Surfaces by Diazonium Salt Reactions

2011 ◽  
Vol 123 (15) ◽  
pp. 3519-3523 ◽  
Author(s):  
Olimpia Arias de Fuentes ◽  
Tommaso Ferri ◽  
Marco Frasconi ◽  
Valerio Paolini ◽  
Roberto Santucci
Keyword(s):  
Carbon Nanotubes ◽  
Diazonium Salt ◽  
Electrode Surfaces

Fabrication of Polyaniline/Carbon Nanotubes Composites Using Carbon Nanotubes Films Obtained by Electrophoretic Deposition

2012 ◽  
Vol 507 ◽  
pp. 113-117 ◽  
Author(s):  
Luisa Pilan ◽  
Matei Raicopol ◽  
Mariana Ioniţă
Keyword(s):  
Carbon Nanotubes ◽  
Electrode Materials ◽  
Diazonium Salt ◽  
Modified Electrodes ◽  
Single Wall Carbon Nanotubes ◽  
Composite Electrodes ◽  
Electrochemically Deposited ◽  
Aniline Oxidation ◽  
Storage Properties ◽  
Diphenyl Amine

In this study, we report a facile electrochemical method to obtain polyaniline/single-wall carbon nanotubes (PANI/SWCNTs) composite electrodes by combining the electroreduction of diazonium salts and electropolymerization of conductive polymers. In a first step, the SWCNTs are covalently functionalized with diphenyl amine through the electrochemical reduction of the 4-aminodiphenylamine diazonium salt in order to provide anchors for the subsequent polymer electrodepostion. The aniline oxidation remains possible on this grafted layer and PANI can easily be deposited on the diphenyl amine-modified electrodes. The electrochemically deposited PANI/SWCNTs composites exhibit excellent electrochemical charge storage properties making them promising electrode materials for high power supercapacitors.

Modification of Aryldiazonium Salts on Electrodes towards Designing Stable and Versatile Sensing Interfaces

2011 ◽  
Vol 64 (5) ◽  
pp. 658
Author(s):  
Guozhen Liu
Keyword(s):  
Diazonium Salt ◽  
Electrode Surfaces ◽  
Alternative System ◽  
Gold Chemistry ◽  
Diazonium Salt Chemistry ◽  
Biosensor Applications

This paper reports the strategy of electrochemically reductive adsorption of aryldiazonium salts on electrodes for designing stable sensing interface. The diazonium salt chemistry can serve as an alternative system to alkanethiol-gold chemistry for the modification of electrode surfaces for biosensor applications.

Preliminary Tests for Grafting p-Nitrophenyl on Carbon Nanotubes

2008 ◽  
Vol 59 (4) ◽  
Author(s):  
Eleonora-Mihaela Ungureanu ◽  
Luisa Pilan ◽  
Aurelia Meghea ◽  
Fabien Le Floch ◽  
Jean-Pierre Simonato ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Glassy Carbon ◽  
Surface Coverage ◽  
Platinum Electrodes ◽  
Radical Species ◽  
Electrode Surfaces ◽  
Diazonium Ion

Experiments concerning the reduction of diazonium ion to radical species realized on glassy carbon and platinum electrodes allowed p-nitrophenyl grafting on the electrode surfaces electrochemically and by immersion. The grafting has been tested electrochemically in order to find the degree of surface coverage by i) cycling voltammetry of the grafted electrode in CH3CN containing 0.1 mol L-1 TBABF4 in the field of potential characteristic for the activity of the nitro groups reduction and/or by ii) cycling the grafted electrode in a transfer solution containing ferrocene in 0.1 M TBABF4 , CH3CN.

The Bioconjugation of Redox Proteins to Novel Electrode Materials

2009 ◽  
Vol 62 (10) ◽  
pp. 1320 ◽  
Author(s):  
Daniel C. Goldstein ◽  
Pall Thordarson ◽  
Joshua R. Peterson
Keyword(s):  
Carbon Nanotubes ◽  
Electron Transfer ◽  
Mesoporous Materials ◽  
Metallic Nanoparticles ◽  
Electrode Materials ◽  
Redox Proteins ◽  
Electrode Surfaces ◽  
Advantages And Disadvantages ◽  
Carbon Nanofibre ◽  
Redox Centre

The immobilization of redox proteins on electrode surfaces has been crucial for understanding the fundamentals of electron transfer in biological systems and has led to the development of biosensors and other bioelectronic devices. Novel materials, such as carbon nanotubes, gold and other metallic nanoparticles, carbon nanofibre and mesoporous materials have been widely used in the construction of these bioelectrodes, and have been shown to greatly improve the efficiency of electron transfer between the electrode and the redox centre of the protein. The use of these materials has spawned a diversity of covalent and non-covalent techniques for protein immobilization that offer different advantages and disadvantages to the performance of the bioelectrode. This review covers the important properties of these novel electrode materials relevant to the bioconjugation of proteins, and discusses the various methods of attachment from recent examples in the literature.

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