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仿生矿化法合成有机-无机杂化纳米花及其催化内酯开环聚合
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摘要
这篇文章中我们报道使用仿生矿化法合成一种简捷,经济,绿色高活性的纳米催化剂,这里我们使用Lipase(脂肪酶来源于猪胰腺,PPL)作为有机部分以Cu~(2+)/Ca~(2+)作为无机部分合成PPL-无机杂化纳米花,这种方法可以扩展到多种酶包括脂肪酶,氧化还原酶等。我们使用SEM、EDX、XRD、FTIR、N_2吸附、TEM以及TGA系统的表征了这种纳米催化剂,相比于游离的酶,这种纳米催化系统具有更强的催化能力和稳定性。接下来我们将这种纳米催化剂应用于内酯开环聚合,并且研究了这种纳米催化剂催化内酯开环聚合,得到分子量为Mn=1,400,PDI=1.51的聚酯材料。
We report a facile,economic and green method to acquire new nanobiocatalytic systems.These special systems utilizing various enzyme and Cu~(2+)/Ca~(2+) as organic and inorganic components,respectively.Here,Lipase(Lipase from Porcine Pancreas,PPL) are used as the protein component of the hybrid nanoflower.The nanoflowers' morphologies,distribution of protein and loading were systematically characterized by SEM,EDX,XRD,FTIR,TEM and TGA,revealing that proteins were successfully encapsulated.They also show enhanced enzymatic activity and stability compared with the free enzymes.Moreover,we used it to catalyst lactone ring-opening polymerization and obtained polyesters with Mn=1,400,PDI=1.51.
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