Abstract
In this paper, radiative and nonradiative energy transfer from laser dye Rhodamine (Rh 6G) as a donor to Oxazine 9 (Oxz 9) as an acceptor in solid polymer matrices, namely modified poly methyl methacrylate (MPMMA) and new solid polymer host media, modified poly glycidyl methacrylate (MPGMA) are investigated by using the steady-state emission measurement and energy transfer at two types of concentrations (high and low). The fluorescence intensity of the acceptor is improved due to the introduction of the donor in both solid media. Energy transfer parameters, including the radiative and nonradiative energy transfer rate constants, critical distance (R-0), and energy transfer efficiency are investigated using the Stern-Volmer plots. The acceptor concentration dependencies of transfer efficiencies and probabilities are also obtained. The values of K-r for D-A in high concentrations system are larger than values of K-nr, in two solid media, whereas nonradiative energy transfer is predominant in low concentrations.