Answers are grounded in this paper and cite their sources.
Improved resistance to photodegradation for Rhodamine 6G was observed when the dye was held in a cooled solid matrix of polymethylmethacrylate. The fraction of dye bleached decreased with decreasing temperature as did the rate of bleaching. The minimum detectable quantum efficiency for photodegradation was φ ≅ 10−7.
No takes yet. Share an insight, caveat, or question.
Fork et al. (1972) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: