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Phototunable Full-Color Emission of Cellulose-Based Dynamic Fluorescent Materials

机译：纤维素基动态荧光材料的光可调全色发射

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摘要

An iridescent chameleon-like material that can change its colors under different circumstances is always desired in color-on-demand applications. Herein, a strategy based on trichromacy and the dynamically tunable fluorescence resonance energy transfer (FRET) process to design and prepare these chameleon-like fluorescent materials is proposed. A set of trichromic (red, green, and blue), solid fluorescent materials are synthesized by covalently attaching spiropyran, fluorescein, and pyrene onto cellulose chains independently. After simply mixing them together, a full range of color is realized. The chameleon-like nature of these materials is based on the dynamic tunable FRET process between donors (green and blue) and acceptors (red) in which the energy transfer efficiency can be finely tuned by irradiation. Ultimately, the reversible and nonlinear regulation of fluorescence properties, including color and intensity, is achieved on a timescale recognizable by the naked eye. Benefited by the excellent processability inherited from the cellulose derivatives, the as-prepared materials are feasibly transformed into different forms. Particularly, a fluorescent ink with the complicated fluorescent input-output dependence suggests more than a proof-of-concept; indeed, it suggests a unique method of information encryption, security printing, and dynamic anticounterfeiting.%1703548.1-1703548.8
机译：在按需颜色应用中，总是需要能在不同情况下改变其颜色的虹彩变色龙般材料。本文提出了一种基于三色性和动态可调荧光共振能量转移（FRET）工艺的策略，以设计和制备这些变色龙状荧光材料。通过将螺并吡喃，荧光素和pyr独立地共价附接到纤维素链上，可以合成一组三色（红色，绿色和蓝色）固体荧光材料。只需将它们混合在一起，就可以实现各种颜色。这些材料的变色龙性质是基于供体（绿色和蓝色）和受体（红色）之间的动态可调谐FRET过程，在该过程中，可以通过辐照微调能量转移效率。最终，在肉眼可识别的时间范围内实现了荧光特性（包括颜色和强度）的可逆和非线性调节。得益于纤维素衍生物所具有的优异加工性能，所制备的材料可容易地转变为不同形式。特别地，具有复杂的荧光输入-输出依赖性的荧光墨水所提出的不仅仅是概念证明；它还具有很多概念上的缺陷。实际上，它提出了一种独特的信息加密，安全打印和动态防伪方法。％1703548.1-1703548.8

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  • 来源
    《Advanced Functional Materials》 |2018年第9期|216-223|共8页
  • 作者

    Tian Weiguo; Zhang Jinming; Yu Jian; Wu Jin; Zhang Jun; He Jiasong; Wang Fosong;

  • 作者单位

    Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    cellulose; dynamic fluorescence; full-color emission; phototunable fluorescence; time-contrast;

    机译：纤维素;动态荧光;全色发射;光可调荧光;时间对比;

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