Study of the electrochemically generated chemiluminescence of reactive oxygen species on indium tin oxide glass

A significant phenomenon is observed when indium tin oxide (ITO) glass is used as the anode in electrochemical studies. Notable luminescent signals are observed when a pulse potential is applied to an ITO electrode in alkaline solution in the absence of a luminescent reagent. This paper discusses the mechanism of this luminescence effect in detail. The investigation reveals that the reactive oxygen species (ROSs) generated during the electrolysis are O2−, OH and H2O2. It was also found that the singlet oxygen (1O2) produced subsequently acted as the indispensable light-emitting entity and the ITO was a critical intensification determinant.

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► A significant phenomenon of electrochemically generated chemiluminescence on indium tin oxide glass.
► The reactive oxygen species generated during the electrolysis and the singlet oxygen produced subsequently acted as the light-emitting entity.
► The intensification from indium tin oxide.