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本项工作用自旋捕捉－电子自旋共振方法研究了四种不同芳香旋化合物，对氯苯酚、溴苯、苯乙酮和α－苯乙醇在超细微粒二氧化钛胶体表面的光生自由基和相关的光化学反应机理．非常有趣的是．半导体超微胶粒的存在，可使化合物的光化学反应改变方向和机理，即化合物在均相争件下的自身光解过程与在胶体粒子表面的光反应过程有显著差别，甚至完全不同．本文对造成这种差异的原因．以胶体粒子光电行为的特殊性的角度进行了探讨．
In this work, the photo-generated free radicals and their correlations of four different aromatic spin compounds, p-chlorophenol, bromophenol, acetophenone and α-phenylethanol on the surface of ultrafine titanium dioxide colloids were investigated by spin-trap-electron spin resonance Photochemical reaction mechanism. Very interesting. The existence of semiconducting micelles can change the direction and mechanism of the photochemical reaction of the compounds, that is, the photolysis process of the compounds under the homogeneous contention has a significant difference or even completely different from the photoreaction process on the surface of the colloidal particles. This article explains the reasons for this difference. The colloidal particle optoelectronic behavior of the particularity of the angle were discussed.