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    pH-responsive AIE-active Polyethylene-based Block Copolymers

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    SI-pH-Responsive AIE-active Polyethylene-Based Block Copolymers.pdf
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    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Jiang, Yu
    Hadjichristidis, Nikos cc
    KAUST Department
    Chemical Science Program
    KAUST Catalysis Center (KCC)
    Physical Science and Engineering (PSE) Division
    Polymer Synthesis Laboratory
    Date
    2019-07-24
    Online Publication Date
    2019-07-24
    Print Publication Date
    2019-09
    Embargo End Date
    2020-07-25
    Permanent link to this record
    http://hdl.handle.net/10754/660937
    
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    Abstract
    A novel synthetic strategy towards pH-responsive aggregation-induced emission (AIE)-active tetraphenylethene (TPE)-functionalized polyethylene-based block copolymers is presented. Tris(3-(4-(1,2,2-triphenylvinyl)phenoxy)propyl)borane was used to initiate the polyhomologation of dimethylsulfoxonium methylide to afford well-defined α-TPE-ω-OH linear polyethylenes (PE). The terminal hydroxyl groups were transformed to atom transfer radical polymerization (ATRP) initiating sites by esterification with α-bromoisobutyryl bromide, followed by polymerization of tert-butyl acrylate (tBA) to provide TPE-PE-b-PtBA block copolymers. After hydrolysis of the tBu group to COOH group, the corresponding pH-responsive TPE-PE-b-PAA block copolymers were obtained. All synthesized block copolymers revealed AIE behavior either in solution or bulk. Due to the pH-responsivity of PAA chains, the aggregation state at different pH and consequently the fluorescence intensity changed. Also, the synthesized block copolymers exhibited ion-specificity fluorescence properties.
    Citation
    Jiang, Y., & Hadjichristidis, N. (2019). pH-responsive AIE-active Polyethylene-based Block Copolymers. Chinese Journal of Polymer Science, 37(9), 930–935. doi:10.1007/s10118-019-2330-0
    Sponsors
    The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).
    Publisher
    Springer Science and Business Media LLC
    Journal
    Chinese Journal of Polymer Science
    DOI
    10.1007/s10118-019-2330-0
    Additional Links
    http://link.springer.com/10.1007/s10118-019-2330-0
    ae974a485f413a2113503eed53cd6c53
    10.1007/s10118-019-2330-0
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

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