双吡啶盐(PQ^(++))与异丙醇的光化还原反应研究

RESEARCH ON THE PHOTOREDUCTION REACTION OF PARAQUAT SALTS WITH iso-PROPYL ALCOHOL

本文用自由基捕捉技术与ESR相结合的方法对五种PQ^(++)—异丙醇体系的光激发均相电子转移过程的研究结果表明PQ^(++)可被异丙醇自由基单电子还原生成PQ^+·自由基,如体系中有二苯酮存在,则电子转移反应速率大大增加.

The homogeneous photoexcited electron -transfer of PQ + + -isopropyl alcohol systems in benzene solution was studied by means of spin trapping -ESR technique. Results show that PQ + + may be reduced, by the free radical (CH3)2COH, to a free radical PQ+; the rate of electron transfer can be accelerated greatly when benzophcnone is added to the photoreaction systems.