Homogeneous Biocatalysis in both Fluorous Biphasic and Supercritical Carbon Dioxide Systems†
We thank Dr. Ludo Kleintjens (DSM Research, Geleen) and Prof. Eric Beckman (University of Pittsburgh) for helpful scientific discussions, Dr. Michael Kaszuba (Malvern Instruments) for assistance with the DLS measurements, Dr. Paul Blood (SChEME, University of Nottingham) for assistance with the online video, and DSM, BBSRC, the EPSRC, and the Royal Society for financial support.
Graphical Abstract
HIP to be green: Cytochrome c and α-chymotrypsin (CMT) can be solubilized in either fluorous solvents or supercritical CO2 by hydrophobic ion pairing (HIP) with perfluorinated anionic surfactants (Krytox 157 FSL, KDP 4606). A model system for homogeneous fluorous biphasic biocatalysis involving the CMT–KDP complex in hexane/perfluoromethylcyclohexane is reported that simplifies both product separation and recycling of the biocatalyst.