Schiff碱Co(Ⅱ)配合物在胶束中催化BNPP水解

Hydrolysis of BNPP catalyzed by the crowned schiff base Co(Ⅱ) complex in micellar solution

合成和表征了两种对称的带冠醚环或吗啉环的Schiff碱Co(Ⅱ)配合物,将此配合物和表面活性剂形成的金属胶束,用于模拟水解金属酶催化BNPP水解。通过分析反应体系的特性吸收光谱,提出了BNPP催化水解反应的机理,据此建立了金属胶束催化BNPP水解的动力学数学模型。本文还讨论了配合物结构、反应体系温度以及胶束对催化BNPP水解的影响。

Two symmetrical cobalt（ Ⅱ ）complexes of the Schiff base with morpholino or aza-crown pendants were synthesized and characterized. The metallomicelle made up of the cobalt （ Ⅱ ） complexes and surfactant, as mimic hydrolytic metalloenzyme,was used in catalytic hydiolysis of bis （4-nitrophenyl）phosphate （BNPP）. The mechanism of BNPP catalytic hydiolysis has been proposed based on the analytic result of specific absorption spectrum of the hydrolytic reaction systems. A kinetic mathematical model, for the calculation of the kinetic parameter of BNPP catalytic hydrolysis has been estabilshed based on the mechanism proposed. The effect of surfactant, effect structure of the complexes, and effect of temperature on the reaction rate of BNPP catalytic hydrolysis have been discussed.