Strategy for Constructing Shape-Memory Dynamic Networks through Charge-Transfer Interactions

Recently, charge transfer (CT) interactions have received attention for the fabrication of supramolecular architectures due to their inherent compatibilities, directional nature and solvent tolerance. In this study, we report a shape-memory dynamic network constructed by the CT interaction between π...

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Published inACS macro letters Vol. 7; no. 6; pp. 705 - 710
Main Authors Liu, Dan, Nie, Wu-Cheng, Wen, Zhi-Bin, Fan, Cheng-Jie, Xiao, Wen-Xia, Li, Bei, Lin, Xu-Jing, Yang, Ke-Ke, Wang, Yu-Zhong
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 19.06.2018
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Summary:Recently, charge transfer (CT) interactions have received attention for the fabrication of supramolecular architectures due to their inherent compatibilities, directional nature and solvent tolerance. In this study, we report a shape-memory dynamic network constructed by the CT interaction between π-electron-rich naphthalene embedded in poly­(ethylene glycol) (PEG-Np) and π-electron-poor six-arm methyl-viologen-ended poly­(ethylene glycol) (6PEG-MV), which was verified by ultraviolet–visible spectroscopy (UV–vis), fluorescence spectra and swelling tests. Interestingly, the mechanical properties of this CT complex were dramatically enhanced compared with the control without CT interaction. Moreover, the excellent shape-memory effect (SME) was realized due to the good crystallization of the PEG segment and stable netpoints based on the CT interaction. In addition, as we expected, this supramolecular polymer network is self-healable and reprocessable.
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ISSN:2161-1653
2161-1653
DOI:10.1021/acsmacrolett.8b00256