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首页> 外文期刊>Advanced Functional Materials >Printable, Down/Up-Conversion Triple-Mode Fluorescence Responsive and Colorless Self-Healing Elastomers with Superior Toughness
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Printable, Down/Up-Conversion Triple-Mode Fluorescence Responsive and Colorless Self-Healing Elastomers with Superior Toughness

机译：可打印，下降/上转换三型荧光响应性和无色自愈弹性体具有优异的韧性

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摘要

Expanding the practical application range of self-healing materials has become an important challenge for developing smart materials. Herein, the synthesis of printable, triple-mode fluorescence responsive, and colorless self-healing elastomers, formed by the combination of disulfide cross-linked polyurethane (PU) polymers, carbon dots (CDs) down-conversion fluorescence materials, and lanthanide ions doped upconversion fluorescence materials. The PU elastomers with optimal mechanical properties and good restorability (recover large strain of 500% after relaxation at room temperature (R.T.) for 2 h) are selected to incorporate CDs for fabricating fluorescence responsive elastomers (denoted as PU-CDs). Significantly, the prepared PU-CDs exhibit not only superior tensile strength and toughness (20.95 MPa and 85.13MJ m(-3), respectively) than the previously reported R.T. self-healing elastomers but also show good self-healing properties and achieve blue fluorescence emissions under the ultraviolet excitation. Furthermore, a series of dual-mode fluorescence patterns based on formulated core@shell structural upconversion inks are prepared on the transparent PU-CDs elastomers by a directly screen-printing method. Self-healing and integrating a series of fluorescence patterns and damaged electrical patterns can also be accomplished successfully. The designed self-healing materials provide new ideas and important guidance for developing and applying the next generation of smart materials.
机译：扩大自我治疗材料的实际应用范围已成为开发智能材料的重要挑战。在此，通过二硫化物交联聚氨酯（PU）聚合物，碳点（CDS）下转化荧光材料和镧离子的组合形成，由二硫化物交联聚氨酯（PU）和镧离子组合形成的可印刷，三模荧光响应性和无色自愈合弹性体的合成上转换荧光材料。选择具有最佳机械性能的PU弹性体和良好的可恢复性（在室温下放松后，在室温下弛豫（R.T.）恢复大规模500％）以掺入Cds以制造荧光响应弹性体（表示为PU-CDS）。显着性，制备的PU-CD不仅具有优异的拉伸强度和韧性（20.95MPa和85.13MJm（-3），而不是先前报道的R.T.自愈弹性体，但也显示出良好的自我愈合性能，并在紫外激发下实现蓝色荧光排放。此外，通过直接丝网印刷方法在透明的PU-CDS弹性体上制备基于配制的核心壳结构上变化油墨的一系列双模荧光图案。也可以成功地完成自我愈合和集成一系列荧光图案和损坏的电气模式。设计的自我修复材料为开发和应用下一代智能材料提供了新的思路和重要指导。

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  • 来源
    《Advanced Functional Materials》 |2021年第18期|2100211.1-2100211.11|共11页
  • 作者

    Yao Weijing; Tian Qingyong; Shi Jiaqi; Luo Chengsheng; Wu Wei;

  • 作者单位

    Wuhan Univ Sch Printing & Packaging Lab Printable Funct Nanomat & Printed Elect Wuhan 430072 Peoples R China|Zhengzhou Univ Henan Inst Adv Technol Sch Mat Sci & Engn Zhengzhou 450001 Peoples R China;

    Zhengzhou Univ Henan Inst Adv Technol Sch Mat Sci & Engn Zhengzhou 450001 Peoples R China;

    Wuhan Univ Sch Printing & Packaging Lab Printable Funct Nanomat & Printed Elect Wuhan 430072 Peoples R China;

    Wuhan Univ Sch Printing & Packaging Lab Printable Funct Nanomat & Printed Elect Wuhan 430072 Peoples R China;

    Wuhan Univ Sch Printing & Packaging Lab Printable Funct Nanomat & Printed Elect Wuhan 430072 Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    down/up-conversion fluorescence responsiveness; polyurethane elastomers; screen-printing; self-healing;

    机译：下降/上转换荧光响应性;聚氨酯弹性体;丝网印刷;自我愈合;

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