Influence of donor–donor transport on excitation energy transfer in binary system C102-C6 doped in Poly (methylmethacrylate)

Highlights: • Steady state analysis and decay curve analysis used in this work. • Energy transfer and migration has been investigated between coumarin102 and coumarin6 in poly(methylmethacrylate). • The pair may be well suited for the conversion of ultraviolet to the visible region. • Material may be well suited to be used in energy transfer involving ternary systems. - Abstract: Energy transfer and migration from Coumarin102 to Coumarin6 in Poly (methylmethacrylate) have been investigated using steady-state and time domain fluorescence spectroscopy. It is found that the influence of energy migration in energy transfer can be described quite convincingly on the basis of theories of Loring, Anderson and Fayer (LAF) and Huber. At higher acceptor concentrations direct donor–acceptor transfer occurs through Förster mechanism. It is suggested to use a mixture of these two dyes in the LSCs.