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    Diels–Alder Polymer Networks with Temperature-Reversible Cross-Linking-Induced Emission

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    Diels_anie.202013183.pdf
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    1.209Mb
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    PDF
    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
    2020-11-12
    Online Publication Date
    2020-11-12
    Print Publication Date
    2021-01-04
    Embargo End Date
    2021-11-12
    Submitted Date
    2020-09-29
    Permanent link to this record
    http://hdl.handle.net/10754/665980
    
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    Abstract
    A novel synthetic strategy toward reversible cross-linked polymeric materials with tunable fluorescence properties is presented. Dimaleimide-substituted tetraphenylethene (TPE-2MI), which is non-emissive due to the photo-induced electron transfer (PET) between maleimide (MI) and tetraphenylethene (TPE) groups, was used to cross-link random copolymers of methyl (MM), decyl (DM) or lauryl (LM) with furfuryl methacrylate (FM). The mixture of copolymer and TPE-2MI in DMF showed reversible fluorescence with “on/off” behavior depending on the Diels-Alder (DA)/retro-DA process, which is easily adjusted by temperature. At high temperatures, the retro-DA reaction of polymer networks is dominant, and the fluorescence is quenched by the PET mechanism. In contrast, at low temperatures, the emission recovers as the DA reaction takes over. Based on these results, a transparent PMFM/TPE-2MI film was prepared, and the emission behavior was investigated. It was found that the polymer film shows an accurate response to the external temperature and exhibited tunable fluorescent “turn on/off” behavior. These exciting results suggest the possible application of this type of reversible cross-linked materials in many areas, including information security and transmission. An example of invisible/visible writing is given.
    Citation
    Jiang, Y., & Hadjichristidis, N. (2020). Diels–Alder Polymer Networks with Temperature-Reversible Cross-Linking-Induced Emission. Angewandte Chemie International Edition. doi:10.1002/anie.202014504
    Sponsors
    The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).
    Publisher
    Wiley
    Journal
    Angewandte Chemie
    DOI
    10.1002/anie.202014504
    Additional Links
    https://onlinelibrary.wiley.com/doi/10.1002/anie.202014504
    ae974a485f413a2113503eed53cd6c53
    10.1002/anie.202014504
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

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