室温离子液体中酚类的酶促聚合
ENZYMATIC POLYMERIZATION OF PHENOLS IN ROOM TEMPERATURE IONIC LIQUIDS.
作者信息
Eker Bilge, Zagorevski Dmitri, Zhu Guangyu, Linhardt Robert J, Dordick Jonathan S
机构信息
Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, New York 12180.
出版信息
J Mol Catal B Enzym. 2009 Jul;59(1=3):177-184. doi: 10.1016/j.molcatb.2009.02.018.
Soybean peroxidase (SBP) was used to catalyze the polymerization of phenols in room-temperature ionic liquids (RTILs). Phenolic polymers with number average molecular weights ranging from 1200 to 4100 D were obtained depending on the composition of the reaction medium and the nature of the phenol. Specifically, SBP was highly active in methylimidazolium-containing RTILs, including 1-butyl-3-methylimidazolium tetrafluoroborate (BMIM(BF(4))), and 1-butyl-3-methylpyridinium tetrafluoroborate (BMPy(BF(4))) with the ionic liquid content as high as 90% (v/v); the balance being aqueous buffer. Gel permeation chromatography and MALDI-TOF analysis indicated that higher molecular weight polymers can be synthesized in the presence of higher RTIL concentrations, with selective control over polymer size achieved by varying the RTIL concentration. The resulting polyphenols exhibited high thermostability and possessed thermosetting properties.
大豆过氧化物酶（SBP）用于催化室温离子液体（RTILs）中酚类的聚合反应。根据反应介质的组成和酚的性质，可获得数均分子量在1200至4100 D之间的酚类聚合物。具体而言，SBP在含甲基咪唑鎓的RTILs中具有高活性，包括四氟硼酸1-丁基-3-甲基咪唑鎓（BMIM(BF(4))）和四氟硼酸1-丁基-3-甲基吡啶鎓（BMPy(BF(4))），离子液体含量高达90%（v/v）；其余为水性缓冲液。凝胶渗透色谱和基质辅助激光解吸电离飞行时间分析表明，在较高RTIL浓度下可合成更高分子量的聚合物，通过改变RTIL浓度可实现对聚合物尺寸的选择性控制。所得多酚表现出高的热稳定性并具有热固性。
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