Electrografting of diazonium salts: A kinetics study

The rates of electrochemical grafting of different diazonium salts on gold are measured by EQCM (Electrochemical Quartz Crystal Microbalance). These rates correlate reasonably well with the σpara Hammett constant, indicating that the partial electrophilic character of the intermediate aryl radical f...

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Bibliographic Details
Published in:Electrochemistry communications 2017-08, Vol.81, p.120-123
Main Authors: Bouden, Sarra, Pinson, Jean, Vautrin-Ul, Christine
Format: Article
Language:English
Subjects:
Chemical engineering
Chemical Sciences
Diazonium salts
EQCM
Kinetics
Substituents effects
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Summary:The rates of electrochemical grafting of different diazonium salts on gold are measured by EQCM (Electrochemical Quartz Crystal Microbalance). These rates correlate reasonably well with the σpara Hammett constant, indicating that the partial electrophilic character of the intermediate aryl radical favors attack on the gold surface. •Study of electrochemical diazonium salts grafting on gold surface by EQCM.•Measurements and study of initial kinetics.•Electron-withdrawing substituents increase the rate of reaction of the aryl radical on the gold surface.
ISSN:1388-2481
1873-1902
DOI:10.1016/j.elecom.2017.06.007