Electrochemiluminescence

A kind of luminescence called electrochemiluminescence, sometimes known as electrogenerated chemiluminescence or ECL, is generated during electrochemical processes in solutions. In electrogenerated chemiluminescence, electrochemically generated intermediates go through a very energetic reaction to create an electronically excited state that, after relaxing to a lower-level state, produces light. The energy difference between these two states correlates to the wavelength of the photon of light that is emitted. Redox processes involving electrogenerated substances can result in ECL excitation by their energising electron transfer. One or all of the reactants are electrochemically created on the electrodes in this type of chemiluminescence excitation. As a very sensitive and selective approach, ECL has shown to be very helpful in analytical applications. By using electrode potential to regulate reactions easily, it combines the analytical benefits of chemiluminescent analysis (lack of background optical signal). Its adaptability, streamlined optical setup vs photoluminescence (PL), and superior temporal and spatial control versus chemiluminescence make it an analytical approach that offers exceptional benefits over other widely used analytical techniques (CL). By changing the electrode potential and so regulating the species that are oxidised or reduced at the electrode and participate in the ECL reaction, increased selectivity of ECL analysis is achieved.