Isomerization of Diphenyl Polyenes. Part II. Fluorescence Properties of l,8-Diphenyl-l,3>5,7-octatetraene in Poly (vinyl alcohol) Film


The effect of temperature on the fluorescence properties of l,8-diphenyl-l,3,5,7-octatetraene (DPO) in polyvinyl alcohol) film (PVA) was investigated in the range from 295 to 428 K. Upon heating above 353 K, the quantum yield of D P O increases rapidly. This effect is irreversible, similarly as the optical density in the long wavelength absorption band (320… (More)


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