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    A self-healable fluorescence active hydrogel based on ionic block copolymers prepared via ring opening polymerization and xanthate mediated RAFT polymerization

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    Publication date
    2018
    Author
    Banerjee, S.L.
    Hoskins, Richard
    Swift, Thomas
    Rimmer, Stephen
    Singha, N.K.
    Keyword
    Hydrogel; Self-healable; BCPs; Block Copolymers; Ring Opening Polymerisation; ROP
    Rights
    © The Authors. This is an Open Access article distributed under the Creative Commons CC-BY-NC license (http://creativecommons.org/licenses/by-nc/3.0/)
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    In this work we report a facile method to prepare a fluorescence active self-healable hydrogel via incorporation of fluorescence responsive ionic block copolymers (BCPs). Ionic block copolymers were prepared via a combined effect of ring opening polymerization (ROP) of ε-caprolactone and xanthate mediated reversible addition–fragmentation chain transfer (RAFT) polymerization. Here polycaprolactone (PCL) was modified with xanthate to prepare a PCL based macro-RAFT agent and then it was utilized to prepare block copolymers with cationic poly(2-(methacryloyloxy)ethyltrimethyl ammonium chloride) (PCL-b-PMTAC) and anionic poly(sodium 4-vinylbenzenesulfonate) (PCL-b-PSS). During the block formation, the cationic segments were randomly copolymerized with a trace amount of fluorescein O-acrylate (FA) (acceptor) whereas the anionic segments were randomly copolymerized with a trace amount of 9-anthryl methylmethacrylate (AMMA) (donor) to make both the segments fluorescent. The block copolymers form micelles in a DMF : water mixture (1 : 4 volume ratio). The ionic interaction of two BCPs was monitored via Förster resonance energy transfer (FRET) and zeta potential measurements. The oppositely charged BCPs were incorporated into a polyacrylamide (PAAm) based hydrogel that demonstrated self-healing behavior and is also highly fluorescent.
    URI
    http://hdl.handle.net/10454/15508
    Version
    Accepted Manuscript
    Citation
    Banerjee SL, Hoskins R, Swift T, Rimmer S and Singha NK (2018) A self-healable fluorescence active hydrogel based on ionic block copolymers prepared via ring opening polymerization and xanthate mediated RAFT polymerization. Polymer Chemistry. 9(10): 1190-1205.
    Link to publisher’s version
    https://doi.org/10.1039/c7py01883e
    Type
    Article
    Collections
    Life Sciences Publications

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