Determination of the quantum yield of singlet-triplet conversion in complex organic compounds by the method of laser fluorimetry

The possibilities of the nonlinear laser fluorimetry method for determination of the quantum yield into the triplet state are demonstrated. The values of the absorption cross section and the triplet-state quantum yield are determined from the fluorescent saturation curves for 6-aminophenolenone and rhodamine 6G (used as a test material).