单线态氧(以下简写作~1O_2)是一种活性氧物质,它不仅在光敏氧化作用中产生,在机体的代谢过程中,往往也能产生,并参与体内的氧化反应。~1O_2由于它与生物分子反应时具有一定的选择性及在凝聚相中具有较长的寿命,而引起了光化学家和光生物学家的极大兴趣。它在真空中的寿命约一小时,在非极性溶剂中由于碰撞猝灭其寿命减至10~(-4)秒,在水中的寿命 Singlet oxygen (hereinafter referred to as ~ 1O_2) is an active oxygen species, it is not only generated in the photosensitive oxidation, the body’s metabolism can often produce, and participate in the body’s oxidation reaction. ~ 1O_2 has attracted great interest from photochemists and photobiologists due to its selectivity in the reaction with biomolecules and its long lifetime in condensed phase. Its lifetime in vacuum is about one hour, its lifetime is reduced to 10 ~ (-4) seconds due to collision quenching in non-polar solvents, its lifetime in water