水溶性卟啉还原甲基紫精动力学的研究  

KINETIC STUDIES OF MV￣(2+) REDUCTION BY WATER-MISCIBLE PORPHYRIN

作　　者：王杏乔[1] 刘玉文[1] 王立波[1] 于连香[1] 郭景富 曹锡章 

机构地区：[1]吉林大学化学系

出　　处：《无机化学学报》1994年第3期243-248,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家基金

摘　　要：利用跟踪法测定了碘化四－（对甲基异烟酰基苯基）［ＴＭＩＡＰＰＩ］等五种水溶性卟啉在还原甲基紫精过程中［ＭＶ＋］浓度的变化，获得了［ＭＶ＋］／［Ｐｏ］～ｔ及［ＭＶ＋］／［ＭＶ２＋］～ｔ的关系曲线．由稳态近似原理推出的动力学方程求得了几种卟啉的动力学参数Ａ、诱导时间ｔｉ及起始速率ｖｏ．通过稳态转化率得知５种水溶性卟啉的光敏强度有如下顺序：ＺｎＴＭｐｙＰ＞ＺｎＴＭＩＡＰＰＩ＞ＺｎＴＭＮＡＰＰＩ＞ＴＭＩＡＰＰＩ＞ＴＭＮＡＰＰＩ．The reaction kinetics of MV￣2+ reduction by five synthesized water-miscible porphyrinsextra-mcthylpyridineporphyrin Zn(Ⅱ) [TMpypZn(Ⅱ)],iodidetetra(p-methylnicotinamidphcnylporphyrin) [TMNAPPI],[TMNAPPIZn(Ⅱ)],iodidctctra-(p-mcthylisonicotiphcnylporphyrin)[TMTAPPI],[TMIAPPIZn(Ⅱ)] has been studied spectrophotometrically.The concentration of MV+as reduction product were determined from QD at 605nm.The dependence of [MV+]/ [Po]and[MVt+]/[MV2+] on time was examined.The kinetic parameterA,induction time ti and initial rate of the reaction vowers obtained from three equations derivedfrom steady-state approximation.The light scnsihvities for the five water-miscible porphyrinshave been found from the conversion rate at steady-state to be in the fiollowing order:ZnTMpyP> ZnTMIAPPI> ZnTMNAPPI> TMIAPPI> TMNAPPI.

关 键 词：卟啉 甲基紫精 还原动力学 

分 类 号：O626.3[理学—有机化学]