1.Based on different action principle, light stabilizers were defined as ultraviolet light screening agent, ultraviolet absorbent, quencher and free radical catching agent.
2.When the amine was used as a triplet quencher, the ketyl radical of ketocoumarin can be observed evidently.
3.In cooling process, when the temperature changed rapidly, the small particle would be obtained resembling the quencher.
4.Sample A whose surface has layer structure via oxidize-deoxidize treatment and sample B which is decarbonization are put into resistance furnace for carbonization and quencher under hydrogen.
5.In the experiments, the influence of triplet state quencher on dye's lasing lifetime was also tested. Two triplet state quenchers which can ameliorate dye's lasing lifetime effectively were found.