Abstract
In this research we form a novel intramolecular charge transfer complex --- Cyanine-TCNQ dye through grafting. Through the UV absorption of dye solution, fluorescence emission spectrum measurement and the electrochemical properties that is measured under the condition with or without exciting light source, we discover that the optics and electrochemical properties of Cyanine-TCNQ dye, which form intramolecular charge transfer complex are significantly different from Cyanine-I with the same main structure.Through the spectrum properties and redox potential measured of dye solution, molecular orbital of Cyanine-TCNQ is calculated and we further submit Two-Step Photoinduced Electron Transfer to explain the number of oxidation / reduction electron of Cyanine-TCNQ dye solution, which change according to time. It is almost the same reason with or without exciting light.