Hot electron-induced electrochemiluminescence of polystyrene modified electrode for rutin determination

For hot electron-induced electrochemiluminescence (HECL), developing facile and controllable insulating layer on the electrode surface is key to the effective electron tunneling. Herein, a polystyrene modified glassy carbon electrode based the spin-coating was proposed for HECL. The constructed interface was characterized by atomic force microscopy (AFM). And HECL performance was investigated in details using the system of Ru (bpy)(3)(2+) and S2O82-. The as-prepared film shows the stable and reproducible HECL performance and the HECL mechanism was discussed using ECL spectra and hydrated electron quenchers. Finally, on the basis of the inhibition of SO4 center dot-, the present polystyrene film was applied to the detection of rutin in the range of 0.1-1.3 mu M with a detection limit of 90 nM (S/N = 3).

Automated summary

In this study, a polystyrene modified glassy carbon electrode was proposed for hot electron-induced electrochemiluminescence (HECL) with a stable and reproducible performance. The HECL mechanism was discussed using ECL spectra and hydrated electron quenchers, and the film was successfully applied in the detection of rutin with a detection limit of 90 nM (S/N = 3) based on the inhibition of SO4 center dot-.