苯基取代乙烯类化合物在硅胶表面敏化光氧化反应的研究

PHOTOSENSITIZED OXIDATION OF SOME ARYLSUBSTITUTED ETHYLENES ON THE SURFACE OF SILICA GEL

随着人们对吸附态有机分子光谱性质的研究的不断深入,光化学中的一个重要方面——表面光化学,也得到了很大的发展。在固体表面上,人们观察到了许多与溶液中不同的现象。这主要是由于固体表面上常常表现出某种特有的吸附特性,从而对被吸附物质的能级状态和分子结构产生影响,进而改变了它们的反应性能,这类报道已有很多。但是将电子转移光敏氧化反应引入到硅胶表面上进行,却很少报道。

The 9,10-dicyanoanthracene and rose bengal sensitized photooxygenation of phenyl substituted ethylenes,such as tetraphenylethylene; 1,1-diphenylethylene; trans-stilbene and a,a'-dimethylstilbene,on the surface of silica gel was investigated.Photooxygenation products were characterized using comparation with authentic samples.The product distribution of photooxygenation reaction were measured.These results indicate photooxygenation reaction in these cases proceeds via the singlet oxygen pathway.