Room temperature phosphorescence lifetime and quantum yield of erythrosine B and rose bengal in aerobic alkaline aqueous solution

► Phosphorescence lifetime of fluorone dyes in aerobe aqueous solution is measured. ► Phosphorescence quantum yield of fluorone dyes in aerobe solution is determined. ► Experimental setup with Q-switched laser and gated PMT detection is described. ► Phosphorescence quenching by dissolved molecular oxygen is analyzed. ► Absorption and fluorescence behavior of fluorones in aqueous solution is studied.