Molecular imprinting polybenzoxazines : a structurally specific supramolecular architecture and its characterization

Abstract

Molecular design and modification of polybenzoxazinew as molecular imprinting polymer (MIP) via two approaches, which are (i) curing of template molecules with benzoxazine monomer, and (ii) structure specific polybenzoxazines synthesis, are reported. In the case of (i), cholic acid as a template for a bisphenol A-based polybenzoxaine is demonstrated. After removing cholic acid template, the MIP phenomenon to rebind with other templates, such as amine and carboxylic acid derivatives is observed. In the case of (ii), bisphenol A is modified with benzoyl chloride in order to apply as a template molecule for co-curing with benzoxazine monomer. The removal of benzoyl group from polybenzoxazines network and the clarification of MIP by rebinding with templates, such as cholic acid, deoxycholic acid, chloramphenicol, carbaryl and pyridine are described. The MIP is characterized by FTIR, DSC and the rebinding property is evaluated by UV-visible spectrophotometry.