Wang Wu, Lai Hua, Cheng Zhongjun, Kang Hongjun, Wang Yongzhen, Zhang Haiyang, Wang Jingfeng, Liu Yuyan
MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
J Mater Chem B. 2018 Dec 7;6(45):7444-7450. doi: 10.1039/c8tb02064g. Epub 2018 Oct 23.
Water-induced shape memory polymers (SMPs) show promising applications in biomedicine, biosensing, anti-counterfeiting and intelligent actuating systems. However, the dual function of shape morphing and color switching has not been achieved in the water-induced SMP system. Herein, a novel water-induced SMP with both color-switching fluorescence behavior and shape memory performance is reported. The material is fabricated by crosslinking poly(vinyl alcohol) (PVA) and pH-responsive fluorescent carbon quantum dots (CQDs). The incorporation of CQDs with PVA not only improves the shape recovery performance but also endows the material with color-switching features. To our best knowledge, such smart ability is first realized in this PVA/CQD SMP system, and this report provides a novel strategy for fabricating smart water-induced SMPs with adjustable shape recovery performance and fluorescence.
水致形状记忆聚合物（SMPs）在生物医学、生物传感、防伪和智能驱动系统中显示出有前景的应用。然而，在水致SMP系统中尚未实现形状变形和颜色切换的双重功能。在此，报道了一种具有颜色切换荧光行为和形状记忆性能的新型水致SMP。该材料通过交联聚乙烯醇（PVA）和pH响应荧光碳量子点（CQDs）制备而成。CQDs与PVA的结合不仅提高了形状恢复性能，还赋予了材料颜色切换特性。据我们所知，这种智能特性首次在该PVA/CQD SMP系统中实现，本报告为制备具有可调形状恢复性能和荧光的智能水致SMPs提供了一种新策略。
