Effect of different metal ions in a new kind of functionalized self-assembled films of trinary complexes on its photoinduced electron transfer property

Three new kinds of self-assembled films were first fabricated through a new strategy. These films have Sn⁴⁺, Zr⁴⁺ and Ce⁴⁺ as bridging central ions, 3, 4, 9, 10-perylene tetracarboxylic acid (PTA) as functional molecules and oxalic acid as connecting ligand. All films were characterized by contact angle, UV spectra, X-ray photoelectron spectra (XPS) and cyclic voltammetry. The effects of light intensity, bias voltage, and electron donor on photocurrents of these films were also studied.