Blocking Behavior of Covalently Attached Anthraquinone Towards Solution-Based Redox Probes

✍ Scribed by Risto Reilson; Marko Kullapere; Kaido Tammeveski

• Book ID: 102180652
• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 349 KB
• Volume: 22
• Category: Article
• ISSN: 1040-0397
• DOI: 10.1002/elan.200900348

✦ Synopsis

Abstract

The electrochemical properties of glassy carbon (GC) electrodes modified with 9,10‐anthraquinone (AQ) have been investigated. Electrografting of GC surface was carried out from the solution of the AQ diazonium derivative. The blocking action of GC/AQ electrodes for Fe(CN)$\rm{{_{6}^{3-}}}$ and Ru(NH~3~)$\rm{{_{6}^{3+}}}$ redox probes was studied using cyclic voltammetry (CV) and the rotating disk electrode (RDE) method. It was established that the extent of blocking was a function of AQ surface concentration. A peculiar behavior was observed at the potentials of AQ reduction.