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综述了单线态氧的结构、制备方法．单线态氧１Δｇ 是氧分子的一种特殊存在形式，根据分子轨道理论其结构是：在１πｇ 轨道上有两个电子占据一个轨道且自旋反平行．经紫外光谱分析已验证其存在．单线态氧１ Δｇ 可由过氧离子和各种局部被卤代的中间体反应获得，也可在光敏染料的存在下，用紫外光照射三线态氧使其激发而得．对于单线态氧的研究将在医药、化妆品、食品等的抗氧性研究方面起到重要作用．
The structure and preparation of singlet oxygen are reviewed. Singlet oxygen 1Δg is a special form of oxygen molecule. According to the theory of molecular orbital, its structure is that two electrons occupy one orbit and the antiparallel of spin in 1π * g orbitals. Its existence has been verified by ultraviolet spectroscopy. Singlet oxygen 1 Ag can be obtained from the reaction of peroxo-ions with a variety of partially halogenated intermediates, or by the irradiation of triplet oxygen with UV light in the presence of a photosensitizing dye. The research on singlet oxygen will play an important role in the research of antioxidation of medicine, cosmetics and foodstuffs.