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Intrinsically Permeable Polymer Vesicles Based on Carbohydrate-conjugated Poly(2-oxazoline)s Synthesized using a Carbohydrate-based Initiator System

Abstract

Polymer vesicles with molecular permeability offer significant potential to contribute to the understanding of biocatalytic processes in nano/micro compartments and therapeutic enzyme reactors. However, constructing such permeable vesicles remains challenging, as clear guidelines for the design of permeable membranes remain elusive. In the present study we focused on a hydrophobic polymer with hydrogen bond donor and acceptor moieties, i.e., a polymer that exhibits a lower-critical-solution-temperature (LCST)-like behavior, as a suitable component for the permeable bilayer membrane. We have developed a carbohydrate-based initiator system for the cationic ring opening polymerization of 2-oxazoline and synthesized molecular permeable polymer vesicles based on an amphiphilic block polymer composed of maltotriose and poly(n-propyl oxazoline) that exhibit LCST-like behavior. The resulting polymer vesicles are permeable to up to 1 kg/mol of FITC-PEG. These findings represent a major milestone toward the development of i) intrinsically permeable polymer vesicles and ii) functional polymer vesicles for a broad range of fundamental and biomedical applications.

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Publication details

The article was received on 22 Oct 2018, accepted on 21 Dec 2018 and first published on 08 Jan 2019


Article type: Paper
DOI: 10.1039/C8PY01502C
Citation: Polym. Chem., 2019, Accepted Manuscript
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    Intrinsically Permeable Polymer Vesicles Based on Carbohydrate-conjugated Poly(2-oxazoline)s Synthesized using a Carbohydrate-based Initiator System

    T. Nishimura, N. Sumi, Y. Koda, Y. Sasaki and K. Akiyoshi, Polym. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C8PY01502C

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