Synthesis, FTIR, NMR, UV–vis and electrochemistry analysis of ferrocenyl Schiff bases

•Five novel compounds L1, L4, L5, L9 and L10 were synthesized via arylation of ferrocene by diazonium salt under phase transfer condition.•The cyclic voltammograms of compounds L1, L4, L5, L9 and L10 showed a clear well-defined redox peak in both conditions .•The calibration plots confirmed that L1, L4, L5, L9, and L10 showed reversible electron transfer processes and diffusion control processes.•The LUMO energy levels give better electrons transportation compare to the LUMO energy level of the conduction band edge of TiO2.