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Performance of zinc oxide quantum dots coated paper and application of fluorescent anti-counterfeiting

机译：氧化锌量子点涂布纸的性能和荧光防伪的应用

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摘要

Fluorescent anti-counterfeiting is one of the most widely used anti-counterfeiting technologies at present. The demand to develop new anti-counterfeiting materials and technology is more and more urgent. Zinc oxide quantum dots (ZnO QDs) have superior fluorescent properties under ultraviolet light, making them a suitable replacement for traditional phosphors for anti-counterfeiting printing, which is environmentally friendly and meets the needs of sustainable development. In this paper, water-soluble ZnO QDs with an average particle size of 5.64nm were prepared. Paper coated by ZnO QDs was obtained after ultrasonic treatment, which could emit bright yellow fluorescence when excited by ultraviolet light. As the concentration of ultrasonic solution is increased, the loading amount of ZnO QDs on the coated paper increased gradually, reaching the maximum when the concentration is increased to 1 mol L-1, which then does not change with an increase in concentration. The fluorescent intensity of the coated paper was consistent with the changing trend of the loading amount. The coated paper has excellent optical stability, is easy to recycle, and provides simple identification of authenticity by ultraviolet light and anti-copy functionality. Their application in packaging and printing is of great significance to the development of complex, concealed and non-repeatable anti-counterfeiting technology. (C) 2021 Optical Society of America
机译：荧光防伪技术是目前应用最广泛的防伪技术之一。开发新型防伪材料和技术的需求越来越迫切。氧化锌量子点（ZnO QDs）在紫外光下具有优异的荧光性能，是传统荧光粉防伪印刷的合适替代品，具有环境友好性，符合可持续发展的需要。本文制备了平均粒径为5.64nm的水溶性ZnO量子点。经超声处理后得到了ZnO量子点包覆的纸张，在紫外光的激发下可以发出明亮的黄色荧光。随着超声溶液浓度的增加，ZnO量子点在涂布纸上的负载量逐渐增加，当浓度增加到1mol L-1时达到最大值，然后不随浓度的增加而改变。涂层纸的荧光强度与负载量的变化趋势一致。该涂布纸具有优异的光学稳定性，易于回收，并通过紫外线和防拷贝功能提供简单的真伪识别。它们在包装印刷中的应用对发展复杂、隐蔽、不可重复的防伪技术具有重要意义。（2021）美国光学学会

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  • 来源
    《Applied optics》 |2021年第8期|共10页
  • 作者

    Wang Xiaoju; Chen Xi; Xu Guobin; Li Jie; Guo Jiaqi; Wang Qi;

  • 作者单位

    Nanjing Forestry Univ Coll Light Ind &

    Food Engn Nanjing 210037 Peoples R China;

    Nanjing Forestry Univ Coll Light Ind &

    Food Engn Nanjing 210037 Peoples R China;

    Nanjing Forestry Univ Coll Light Ind &

    Food Engn Nanjing 210037 Peoples R China;

    Nanjing Forestry Univ Coll Light Ind &

    Food Engn Nanjing 210037 Peoples R China;

    Nanjing Forestry Univ Jiangsu Coinnovat Ctr Efficient Proc &

    Utilizat F Nanjing 210037 Peoples R China;

    Nanjing Forestry Univ Coll Light Ind &

    Food Engn Nanjing 210037 Peoples R China;

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  • 正文语种 eng
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