Preliminary tests for grafting p-nitrophenyl on carbon nanotubes

Abstract

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.