Abstract
A micro-sized poly( n -butyl acrylate-co- N -acryloxysuccinimide) [poly(nBA-co-NAS] copolymer bio-carrier matrix has been synthesized from n-butyl acrylate (nBA) and N -acryloxysuccinimide (NAS) monomers through a single step emulsion photo-polymerization protocol. Narrower size distribution of the copolymer microspheres having a size in the range of 0.31-1.04 µm was obtained using nBA-SDS composition ratio of 0.25:5.00 (mL : mg). The FTIR analysis result confirmed the presence of the useful succinimide functional groups on the poly(nBA-co-NAS), which rendered the copolymer microspheres a feasible alternative to other polymers for use as biological immobilization carrier for enzymes and DNA molecules in the fabrication of advanced biosensor devices. The low glass transition temperature ( T g ) of the as-synthesized copolymer microspheres signifies the soft and good adhesion properties of the matrix to be attached to the solid support to form the miniature solid-state biosensing devices.
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