AIE-active vitrimer with photoluminescence, reprocessability and shape memory effects
作者：Hongyao Niu, Zhou Deng, Fenfen Wang * and Pingchuan Sun *
關鍵字：Vitrimer, photoluminescence, reprocessability, shape memory
論文來源：期刊
發表時間：2024年
Vitrimers with covalent adaptable networks are a class of dynamic crosslinked polymers that can be
reprocessed and self-repaired. However, their unitary functionality and poor responsiveness to external
stimuli limit the potential of vitrimers for applications as smart materials. Herein, we proposed a new
strategy by constructing an aggregation-induced emission (AIE)-active vitrimer (TER) via crosslinking
epoxy derivatives of tetraphenylethylene to form a dynamic covalent network. The activated
intramolecular rotation of AIEgen motifs with increasing temperature endows this vitrimer with thermal
responsive photoluminescence. 1H static and 1H–13C wideline separation SSNMR experiments were used
to investigate the molecular motion of the TER network, providing significant implications for the RIM
mechanism of AIE in this AIE-active vitrimer. Moreover, as a dynamic crosslinked network, TER is a
promising versatile material with excellent photoluminescence, reshaping, reprocessing and shapememory
properties. The AIE-active vitrimer not only represents a huge potential for further development
of dynamic covalent polymers, but also extends the applications of vitrimers in different fields.