Phthalocyanine/TiO2 ordered film and preparation method thereof

The invention relates to a phthalocyanine/TiO2 ordered film and a preparation method thereof, belonging to the field of nonlinear optical films. The invention overcomes the defects of complex equipment, high cost, difficult operation and difficult control of film thickness in the existing method for preparing nonlinear optical films. The phthalocyanine/TiO2 ordered film of the invention is formedby connecting a substrate, a connection layer and a lamination layer from bottom to top, wherein the connection layer is formed by alternately stacking PDDA layers and PSS layers in pairs, and the lamination layer is formed by alternately stacking TiO2/PDDA layers and phthalocyanine layers. The preparation method comprises the following steps: pretreating the substrate; alternately soaking the substrate in a PDDA solution and a PSS solution; and then, alternately soaking the substrate in a TiO2 compound solution and a phthalocyanine solution to obtain the phthalocyanine/TiO2 ordered film. Theinvention has the advantag