Spectroscopic studies on the photoinduced changes in some ferrocene derivatives in halocarbon solvents

The photoinduced changes in some ferrocene derivatives in halocarbon solvents chloroform and carbon tetrachloride (using deoxygenated solutions) have been investigated under different experimental conditions by monitoring the photoinduced changes in the electronic absorption spectra of the ferrocene derivatives in the halocarbon solvents. The spectra were recorded before as well as after photoexcitation of the sample solution by a monochromatic radiation. The results have indicated the photoinduced-charge transfer between a particular ferrocene derivative and the halocarbon solvent used. For different values of photoexcitation time (duration), absorption spectra of some of the ferrocene derivatives in halocarbon solvents have shown isobestic points. The primary step in the photo process is expected to be the dissociation of the charge transfer state to give the different ions.