Magnetically Responsive Enzyme and Hydrogen‐Bonded Organic Framework Biocomposites for Biosensing

Abstract

The one‐pot synthesis of multicomponent hydrogen‐bonded organic framework (HOF) biocomposites is reported. The co‐immoblization of enzymes and magnetic nanoparticles (MNPs) into the HOF crystals yielded biocatalysts (MNPs‐enzyme@BioHOF‐1) with dynamic localization properties. Using a permanent magnet, it is possible to separate the MNPs‐enzyme@BioHOF‐1 particles from a solution. Catalase (CAT) and glucose oxidase (GOx) show increased retention of their activity when coimmobilized with MNPs. MNPs‐GOx@BioHOF‐1 biocomposites are used to prepare a proof‐of‐concept glucose microfluidic biosensor, where a magnet allow to position and keep in place the biocomposite inside a microfluidic chip. The magnetic response of these biocatalysts can pave the way for new applications for the emerging HOF biocomposites.