摘要
以负载在Nafion膜中的三联吡啶铂络合物(1)为敏化剂,在甲醇和二氯甲烷中研究了7 去氢胆固醇的光敏氧化反应.实验表明,与均相光敏氧化相比,Nafion负载的敏化剂具有敏化剂与产物、剩余底物、溶剂等容易分离并可重复使用的优点.
Photosensitized oxidation of 7dehydrocholesterol in methanol and dichlormethane by Nafion membraneloaded Platinum(Ⅱ) terpyridyl acetylide (1) was investigated.In comparison with photosensitization in homogeneous solution,Nafion membraneloaded sensitizer can be easily separated from products,unreacted materials,and solvent,and can be reused in many recycles without loss of activity.Although a fraction of generated singlet oxygen is quenched during the course of diffusion from the Nafion membrane to the bulk solution,the overall quantum yield of product formation is still reasonable,and can be further enhanced by using a small amount of deuterium solvent.
出处
《感光科学与光化学》
CSCD
北大核心
2003年第6期405-411,共7页
Photographic Science and Photochemistry
基金
科技部国家重点基础研究发展规划项目(G2000078104
G2000077502)
国家自然科学基金资助项目(20073051)
