Energy transfer between different luminescent centers in some double complexes of Cr(III)

The luminescent behaviour of compounds containing two chromophoric centers of Cr(III) has been analysed. It has been found that luminescence always originates on the chromophore having Lower energy metastable states. This shows that there is an energy transfer between the two chromophores. Possible mechanisms for this energy transfer are discussed on the basis of the temperature dependence of emission intensity.