FUNCTIONAL METALLOMACROCYCLES AND THEIR POLYMERS .26. SYNTHESIS OF 2-ACRYLOYLAMINO-9,16,23-TRI-TERT-BUTYLPHTHALOCYANINE AND AUTOXIDATION OF THIOL WITH WATER-SOLUBLE POLYMERS CONTAINING COBALT(II) PHTHALOCYANINATE COMPLEX

被引：22

作者：

KIMURA, M ^{[1
]}

DAKENO, T ^{[1
]}

ADACHI, E ^{[1
]}

KOYAMA, T ^{[1
]}

HANABUSA, K ^{[1
]}

SHIRAI, H ^{[1
]}

机构：

[1] SHINSHU UNIV,FAC TEXT SCI & TECHNOL,DEPT FUNCT POLYMER SCI,UEDA,NAGANO 386,JAPAN

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 1994年 / 195卷 / 07期

关键词：

D O I：

10.1002/macp.1994.021950711

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The catalytic autoxidation of 2-mercaptoethanol was studied by using new water-soluble polymers containing a cobalt(II) phthalocyaninate complex as a catalyst. The phthalocyanine vinyl-monomer, 2-acryloylamino-9,16,23-tri-tert-butylphthalocyanine (APc(t-Bu)3), was synthesized and copolymerized with three kinds of water-soluble monomers to result in a favorite electrostatic environment as a catalyst. The resulting cationic polymer containing a cobalt(II) phthalocyaninate complex has high activity as a catalyst for autoxidation of 2-mercaptoethanol independent of pH. The catalytic system obeys Michaelis-Menten kinetics with respect to substrate concentration. The rate constant k5 of the rate-controlling step and the apparent Michaelis constant K(m)app were obtained from a Lineweaver-Burk plot. The cationic environment on the polymeric catalyst enhances enzyme-like activity in the neutral pH region for autoxidation of 2-mercaptoethanol, because of the promotion of substrate dissociation and the accumulation of thiolate anions.

引用

页码：2423 / 2433

页数：11

共 17 条

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