高分子中に分散されたペリレンの光化学挙動

概要

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Excimer emission peak of concentrated perylene dispersed in styrene was found at 550 nm. The peak wavelength of the excimer emission is longer than the longest fluorescence peak of diluted perylene solution, 510 nm. The emission spectra were compared with those of evaporated and solid perylene, and were concluded to be produced by the excimer state caused by associated perylene molecules. The laser diffraction measurement indicated that perylene pigment thus dispersed in styrene was distributed uniformly between 0.3 μm and 0.8 μm. Lifetime of the excimer emission was observed to be 13.0 ns in styrene monomer and 20.5 ns in solid polystyrene. It was suggested that the lifetime of the excimer emission increased with molecular weight of styrene.
東海大学の論文