Are there any common lab chemicals or household stuff that produce phosphorescence?
I am aware of ZnS, CaS, Fluorescein, Erythrosin B, Vanillin Benzaldehyde, Vitamin B2, Tryptophan etc.
I just need something for sanity check on a fluorescence/phosphorecence lifetime measurement system. I am getting results with fluorescence, but not with phosphorescence.
My samples are biological plant material. With TCSPC in nano second timescale, I am getting fluorescence decay. But with micro and milli second timescale, I am getting only unifom constant counts (looking like background counts). The sanity check is to see if the instrument is able to detect phosphorescence decay from any material known to have phosphorescence, hence the question.