Abklingzeitmessungen an Pseudoisocyanindiäthylchlorid mit einem Phasenfluorometer mit 200 MHz-Lichtmodulation

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Abstract
The decay time of pseudo-isocyanine (2,2 nsec at room temperature) has been measured by a phase fluorometer of 200 Me modulation frequency and its temperature dependence with respect to self absorption has been investigated. This allows to calculate the molecular decay time (1,7 nsec) and the number of molecules, which form the fluorescent polymer of the dye. Moreover the decay times of some p-oligophenylenes and the quenching effekt of nitrobencene on POPOP (1,82 nsec) have been measured.