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    Ti3C2Tx MXene-Activated Fast Gelation of Stretchable and Self-Healing Hydrogels: A Molecular Approach

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    Type
    Article
    Authors
    Ge, Gang
    Zhang, Yi Zhou cc
    Zhang, Wenli cc
    Yuan, Wei
    El Demellawi, Jehad K. cc
    Zhang, Peng
    Di Fabrizio, Enzo M. cc
    Dong, Xiaochen
    Alshareef, Husam N. cc
    KAUST Department
    Biological and Environmental Science and Engineering (BESE) Division
    Functional Nanomaterials and Devices Research Group
    Material Science and Engineering
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2021-01-20
    Online Publication Date
    2021-01-20
    Print Publication Date
    2021-02-23
    Embargo End Date
    2022-01-20
    Submitted Date
    2020-09-22
    Permanent link to this record
    http://hdl.handle.net/10754/668157
    
    Metadata
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    Abstract
    MXene-based hydrogels, a flourishing family of soft materials, have recently emerged as promising candidates for stretchable electronics. Despite recent progress, most works use MXenes as conductive nanofillers. Herein, by tuning the molecular interactions between MXene nanosheets and other constituents within the hydrogels, we demonstrate Ti$_{3}$C$_{3}$T$_{\textit{x}}$ MXene can act as a versatile cross-linker to activate the fast gelation of a wide range of hydrogels, starting from various monomer- and polymer-based precursors. The gelation behavior varies significantly across hydrogels. In general, the fast gelation mechanism is attributed to the easier generation of free radicals with the help of Ti$_{3}$C$_{2}$T$_{\textit{x}}$ MXene and the presence of multiscale molecular interactions between MXene and polymers. The use of MXene as a dynamic cross-linker leads to superior mechanical properties, adhesion, and self-healing ability. Owing to the inherent photothermal behavior of Ti$_{3}$C$_{3}$T$_{\textit{x}}$ and the heterogeneous phase-transforming features of polymers, a polymer-MXene hydrogel is demonstrated to exhibit distinctive thermosensation-based actuation upon near-infrared illumination, accompanied by rapid shape transformation.
    Citation
    Ge, G., Zhang, Y.-Z., Zhang, W., Yuan, W., El-Demellawi, J. K., Zhang, P., … Alshareef, H. N. (2021). Ti3C2Tx MXene-Activated Fast Gelation of Stretchable and Self-Healing Hydrogels: A Molecular Approach. ACS Nano. doi:10.1021/acsnano.0c07998
    Sponsors
    This work was supported by King Abdullah University of Science & Technology (KAUST), National Natural Science Foundation of China (21805136), Natural Science Foundation of Jiangsu Province (BK20170999), and Research Innovation Plan for Graduate Students in Jiangsu Province (KYCX20_1035).
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Nano
    DOI
    10.1021/acsnano.0c07998
    PubMed ID
    33470788
    Additional Links
    https://pubs.acs.org/doi/10.1021/acsnano.0c07998
    ae974a485f413a2113503eed53cd6c53
    10.1021/acsnano.0c07998
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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