Enzymatic polymerization of phenols in room-temperature ionic liquids

Eker, Bilge
Zagorevski, Dmitri
Zhu, Guangyu
Linhardt, Robert J.
Dordick, Jonathan S.
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Biology , Chemistry and chemical biology , Chemical and biological engineering , Biomedical engineering
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Enzymatic polymerization of phenols in room-temperature ionic liquids, B. Eker, D. Zagorevski, G. Zhu, R.J. Linhardt, J.S. Dordick, Journal of Molecular Catalysis B: Enzymatic, 59, 177–184, 2009.
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 Da 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(BF4)), and 1-butyl-3-methylpyridinium tetrafluoroborate (BMPy(BF4)) 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.
Journal of Molecular Catalysis B: Enzymatic, 59, 177–184
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The Linhardt Research Labs.
The Shirley Ann Jackson, Ph.D. Center for Biotechnology and Interdisciplinary Studies (CBIS)
The Linhardt Research Labs Online Collection
Rensselaer Polytechnic Institute, Troy, NY
Journal of Molecular Catalysis B: Enzymatic