Potential-dependent chemiluminescence of luminol on the gold electrode modified with ferrocenylalkanethiol self-assembled monolayer

Self-assembled monolayer of ferrocenylundecanethiol (FcC11SH) on gold electrode was used for the potential-dependent catalyst for chemiluminescence of luminol. Ferrocene head groups adsorbed on gold were oxidized to ferricinium cation species electrochemically and catalyzed the chemiluminescence of luminol. As the redox state of ferrocene group can be regulated by electrode potential, chemiluminescence response can also be controlled electrochemically. The presented system was adopted for detection of glucose in the presence of glucose oxidase since the light emission was detected even in the neutral and weak acid solution.