Hydrolysis kinetics of p-nitrophenylpicolinate catalyzed by schiff base Mn(III) complexes in Gemini 16-2-16 micellar solutiony

作者：Xu Bin^*; Jiang Weidong; Zhang Jin; Fan Guangyin; Li Jianzhang

来源：Central European Journal of Chemistry, 2009, 7(3): 542-549.

DOI：10.2478/s11532-009-0043-x

• PNPP
• Hydrolysis kinetics
• Steric hindrance
• Gemini 16-2-16 micelle
• Schiff base Mn(III) complexes

Two mono-Schiff base Mn(III) complexes (MnL(2)Cl, L=L(1) and L(2)) were synthesized and employed as artificial hydrolases in catalyzing the hydrolysis of p-nitrophenylpicolinate (PNPP) in Gemini 16-2-16 micellar solution. The effect of different micelles and their complex structures on the catalytic hydrolysis of PNPP is discussed in detail. The observations showed that MnL(2)(2)Cl exhibited higher catalytic activity over MnL(2)(1)Cl under a comparable condition, which confirmed that an open active centre is essential for modulating the activities of the two enzyme mimics. Moreover, under the conditions employed, hydrolytic rates of PNPP induced by these Mn(III) complexes were faster in Gemini 16-2-16 micelles than that in the micellar solution of cetyltrimethylammonium bromide (CTAB), a conventional analogue of Gemini 16-2-16.

• 出版日期2009-9
• 单位西华师范大学; 重庆文理学院; 四川轻化工大学