Enhanced Photo-Electrochemical Responses through Photo-Responsive Ruthenium Complexes on ITO Nanoparticle Surface

The mononuclear ruthenium 1-Cl and dinuclear 2-Cl complexes undergo a photo-induced ligand exchange in water, affording the corresponding 1-H2O 2-H2O complexes. use of indium tin oxide nanoparticles (nanoITOs) to explore photo-electrochemistry situ-generated solution revealed greater photocurrents produced by these two when compared with an experiment using buffer only. Interestingly, high photocurrent shown complex was accompanied deposition its higher oxidation state (H2O)RuII–RuIII(OH), as evidenced cyclic voltammetry, SEM XPS. IPCE spectro-electrochemistry studies supported TD-DFT calculations visible light harvesting ability subsequent electron injection into conduction band nanoITOs, enhanced via plausible chelating effect.