【摘要】 本文研究了二苯甲酮（BP）-三乙胺（TEA）在SDS胶束水溶液中的电子转移光反应。观察到SDS胶束对BP的光还原反应具有明显的催化作用,与纯水溶液中的反应相比较,速度提高41倍。BP的光还原速度和BP浓度成正比,在低浓度胺时（<0.02M）,φ^-1和[TEA]^-1成正比;而在高浓度胺时,φ^-1和[TEA]^-2成比例。动力学数据表明,在SDS胶束中有利于电子的转移反应,K_j/K_d值增加,使光还原速度提高,而在高浓度胺条件下（>0, 02M）,有利于质子的转移反应,K_h/K_e值增加,使光还原反应的量子收率提高.另外,在阳离子（CTAB）和非离子（Triton X-305）胶束体系中做了对比实验,结果表明,离子型胶束的催化作用远比非离子型好。更多还原

【Abstract】 The electron transfer photoreactions of benzophenone （Bp）/triethylamine （TEA） in the SDS micellar aqueous solution have been studied.pronounced promoting effects of SDS micelle on the photoreduction of Bp are observed. The photoreduction rate of Bp （R_i） increases by 41 times as compared with the reactio ncarried out in neat water solution. The rate R_i is directly proportional to the concentration of Bp. Some linear relationships between φ^-1 vs [TEA]^-1 at low concentration （<0.02M） and φ^-1 vs [TEA]^-2 at high concentration of amine （>0.02M） are obtained. Kinetic data indicates that the electron transfer in the photoreaction of BP-TEA is more favorable in SDS micelle with the increase of K_i/K_d and R_i.At high amine concentration the proton transfer in the exciplex becomes more efficient. It leads to the increase of K_h/K_e value and the quantum yield for photoreduction of Bp. Some reactions of Bp-TEA proceeded in cationic （CTAB） and nonionic （Triton X-305） micellar systems are also studied for comparison. The results show that the catalysis of ionic micelle is obviously more efficient than that of nonionic micelle.更多还原