Improved polymer-immobilized photosensitizer are disclosed as well as methods of preparing and using them. The polymer-immobilized photosensitizers comprise a cross-linked polymer backbone, a plurality of cationic ammonium or phosphonium groups covalently bound to the polymer backbone and an immobilized photosensitizer. The average total number of carbon atoms in the ammonium or phosphonium group is at least four and preferably at least 12. The photosensitizer can be either covalently or ionically bound to the polymer. Polymer-supported photosensitizers of the invention are unexpectedly superior in catalyzing the photosensitized oxidation of compounds containing carbon-carbon double bonds.
本发明公开了改进的高分子固定光敏剂的方法及其制备和使用方法。所述高分子固定光敏剂包括交联高分子骨架、共价结合于高分子骨架上的多个阳离子
铵或
磷酸铵基团以及固定的光敏剂。阳离子
铵或
磷酸铵基团中的平均碳原子总数至少为四,最好至少为12。光敏剂可以通过共价键或离子键与高分子结合。本发明的高分子支持光敏剂在催化含碳-碳双键化合物的光敏氧化反应方面出乎意料地优越。