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测试了１×１０－５ｍｏｌ／Ｌ５，５－二苯基－２，２－联唑（ＰＯＯＰ）、反－１，２－双［２－（５－苯基唑基）］乙烯（ＰＯＥＯＰ）、４，４－双［２－（５－苯基唑基）］－１，１－联苯（ＰＯＢＯＰ）在含不同浓度卤代烃的１，４－二氧六环溶液中的荧光量子产率，讨论了荧光猝灭机理，计算出ＣＨ３Ｉ、ＰｈＩ、ＰｈＢｒ对ＰＯＥＯＰ、ＰＯＯＰ、ＰＯＢＯＰ的荧光猝灭速率常数．研究发现，卤代烃分子越小，卤原子核电荷数越高，其猝灭荧光能力越强
1 × 10-5mol / L 5,5-diphenyl-2,2-bifizole (POOP), trans-1,2-bis [2- (5-phenyloxazolyl) (POEOP) and 4,4’-bis [2- (5-phenyl-oxazolyl)] - 1,1’-biphenyl (POBOP) in 1,4-dioxane containing different concentrations of halogenated hydrocarbons Fluorescence quantum yield in solution, the mechanism of fluorescence quenching was discussed and the constants of fluorescence quenching of POEOP, POOP and POBOP by CH3I, PhI and PhBr were calculated. It is found that the smaller the number of halogenated hydrocarbon molecules, the higher the charge of halogen nucleus, and the stronger its fluorescence quenching ability