Abstract
In the present study, glucose-responsive polymeric complex micelles based on the complexation of phenylboronic-acid-based (PBA-based) block copolymer and diol-functionalized polymers are reported. The phenylboronic-acid- and diol-based block copolymers were successfully synthesized in only two reaction steps using reversible addition-fragmentation chain-transfer (RAFT) polymerization and postpolymerization modification of the obtained poly[( N-acryloylmorpholine- block-( N-acryloylmorpholine- co-pentafluorophenyl acrylate)], poly[(AMP- b-(AMP- co-PFPA)], reactive block copolymer. The self-assembly of the complex micelles was investigated under neutral conditions using dynamic light scattering (DLS) and transmission electron microscopy (TEM). The interaction of the PBA block copolymer and diol-containing polymer via boronate ester bond was investigated by 1H NMR and UV-vis spectroscopy. The complex micelles enhanced the glucose responsiveness under physiological conditions compared to simple PBA micelles. Furthermore, the successful glucose-triggered release of FITC-insulin from the polymeric micelles was investigated.
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