Abstract
Abstract Migration of the singlet excition energy was studied by the fluorescence quenching method for two amorphous vinyla and methacrylate polymers containing the 1,3,5-triphenyl-2-pyrazoline chromophore as a pendant unit, poly[1,3-diphenyl-5-(p-vinylphenyl)2-pyrazoline] (PVTPP) (I) and poly[1,3-diphenyl-5-(P-methacryloyloxyphenyl)-2-pyrazoline] (PMTPP) (II). The results are discussed in terms of a random migration model. It was shown that the singlet excitationenergy migrates about 48 pendant groups in PVTPP and 45 in PMTPP at 0[ddot] C within the lifetime of thier exited sttes (5 nsec) the value being almost the same with the two polymers. These values of the excitation energy migration in the polymers, when compared with our earlier results, are about one order of magnitude smaller than that in the glassy state of a low-molecular weight analogue, 1, 3-diphenyl-5-(p-cholorphenyl)-2-pyurazoline (p-CITPP), and approximately four orders of mangnitude smaller than that in the single crystal of the same ma...
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