摘要
应用NBT-光照法研究了配合物[Cu(DPPZ)(L-Val)(H2O)]ClO4.2H2O(1),[Cu(DPPZ)(L-Ile)]ClO4(2),[Cu(DPPZ)(L-Tyr)(H2O)]ClO4.1.5H2O(3)(DPPZ=二吡啶并[3,2-a:2’,3’-c]吩嗪,L-Val=L-缬氨酸,L-Ile=L-异亮氨酸,L-Tyr=L-酪氨酸)在水溶液中的SOD活性,并用循环伏安法研究了配合物的电化学性质.结果表明,三种配合物均具有良好的SOD活性,表观催化速率常数分别为2.27×107,1.46×107和1.23×107mol-1.L.s-1.
The SOD-like activities of the complexes [ Cu(DPPZ) (L-Val) ( H20) ] ClO4. 2H2O(1), [ Cu (DPPZ) (L-Ile) ] ClO4 (2) and [ Cu(DPPZ) (L-Tyr) ( H2O) ] ClO4· 1.5 H2O (3) ( DPPZ = dipyrido[ 3, 2- a: 2', 3' -c] phenzine, L-Val = L-valinate, L-Ile = L-isoleucinate, L-Tyr = L-tyrosinate) have been determined in water solution by NBT-illumination method. The cyclic vohammograms of the three complexes have been investigated. The results indicate that the complexes possess excellent SOD-like activities, the rate constants (KQ) of complexes (1), (2) and (3) for catalyzing the dismutation of O^- 2are 2.27 × 10^7, 1.46×10^7, and 1.23 × 10^7mol^-1·L· s^ -1, respectively.
出处
《化学研究》
CAS
2007年第1期5-8,共4页
Chemical Research
基金
广东省自然科学基金重点项目(04105986)