金属胶束催化VI:在Brij35胶束中Zn(II),Co(II)配合物对PNPP水解的催化作用  

Metallomicellar Catalysis VI: The Catalytic Hydrolysis of PNPP by Zn(II) and Co(II) Complexes in Brij35 Micellar Solution

作　　者：蒋福宾[1] 舒远杰[2] 黄忠[1] 蒋炳英[1] 余孝其[1] 曾宪诚[1] 

机构地区：[1]四川大学化学学院 [2]中国工程物理研究院化工材料研究所,四川绵阳621900

出　　处：《四川大学学报（自然科学版）》2003年第3期552-556,共5页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金(2987301;20173038)

摘　　要：合成了3个配体:N,N,N′,N′, 四(2 羟乙基) 1,3 丙二胺(1),N,N,N′,N′, 四(2 羟乙基) 1,10 癸二胺(2),N,N,N′,N′, 四(2 羟乙基) 1,4 对甲苯二胺(3)及其与二价金属离子Zn(II)和Co(II)形成的金属配合物.在25℃,不同pH值下,研究了这些金属配合物在Brij35胶束溶液中催化PNPP水解的反应.其结果表明:在催化PNPP水解反应中,其活性物种为2∶1(配体:金属离子)的单核金属配合物.不同金属配合物的催化活性与配合物的桥联配体及反应的微环境相关.The syntheses of three ligands: (1)N, N, N′, N′tetra (2hydroxyethyl)1,3propylenediamine, (2)N, N, N′, N′, tetra(2 hydroxyethyl)1, 10decadiamine, (3)N, N, N′, N′tetra (2 hydroxyethyl)1,4xylyldiamine were reported. The catalytic hydrolysis of PNPP by the bivalent metal ions Zn (II) and Co (II) complexes formed from these ligands were studied kinetically in the buffered Brij35 micellar solution at 25℃ and different pH values. The results indicated that 2∶1 (ligand: Metal ion) mononuclear metal complexes are the active species for the catalytic hydrolysis of PNPP. The catalytic activity of different metal complexes catalyzed hydrolysis of PNPP depends on the rigidity of the bridgeconnecting ligand and the microenvironment.

关 键 词：金属胶束催化 PNPP水解反应 桥联配体 金属配合物 表面活性剂 

分 类 号：O643.31[理学—物理化学]