【发光材料作文范文小学英语】外刊《科学》解密技术英语-磷光FRET和多色防伪印刷阅读

本文摘自外刊《科学》系列(science advances 15 apr 2022 vol8)。issue 15)on-demand modulating afterglow color of water-soluble polymers through phosphore scence FRET for multicolor security prity

论文摘录内容如下。

on-demand modulating afterglow color of water-soluble polymers through phosphore scence fret for multicolor security printing

通过磷光FRET，根据需要调整水溶性聚合物的余光颜色，用于多色防伪印刷。

developing full-color organic ultralong room temperature phosphore scence(ourtp)Materials with continuously variable afterglow emimie

开发具有连续可变余光发光的全色有机超长温磷光材料，在各种光电应用中具有相当的实际意义，但仍是一个巨大的挑战。

Here，we present an effective strategy for on-demand engineering of afterglow color in water-soluble polymeric systems via efficient

在此基础上，通过有效的磷光共振能量传输，提出了水溶性聚合物系统中根据需要设计余光颜色的有效策略。

using a blue after glow emitting water-soluble polymer as host and a series of fluorescent emitters with varied e missive colors as guests，afters

以蓝色余光发光的水溶性聚合物为主体，以不同发射颜色的荧光发射体为对象，合理调节余光发光，获得了蓝色到红色、甚至白色的全彩余光发光。其长寿命为4.2 197492，光量子产率达36%。

these water-soluble multicolor-emitting polymeric afterglow systems can function as ourtp security inks，and multi level information

uccessfully established by RGB-based multicolor security printing.

这些水溶性多色发光聚合物余辉体系可作为防伪油墨，并通过基于RGB的多色防伪印刷成功实现了多级信息加密。

These results present important guidance in developing high-performance afterglow polymers with on-demand color tuning ability for remarkable optoelectronic applications.

这些结果为开发具有按需颜色调节能力的高性能余辉聚合物提供了重要的指导。

重点词汇

on-demand按需的；应顾客要求即可提供的；可点播的

modulating调整；变调；调节；（modulate的现在分词形式）

afterglow夕照；晚霞；愉快回想

phosphorescence磷光；磷火

multicolor五彩缤纷的；多色的；多色

optoelectronic光电子的

formidable challenge巨大挑战；难以应付的挑战

emitters发射器；（emitter的复数）

emissive能发光的；能发热的；放射性的

conferring授予；（confer的现在分词）

Organic ultralong room temperature phosphorescence (OURTP) materials with lifetimes over 0.1 s have been emerged as a hot research focus in recent years owing to their unique photophysical properties and innovative applications in many areas.

寿命超过0.1 s的有机超长室温磷光材料因其独特的光物理性质和在许多领域的创新应用而成为近年来的研究热点。

Specially, OURTP materials have been increasingly regarded as promising alternatives for recording inks in security printing because of their multiplex properties of ultralong lifetime and tunable emission color that can render the printed information unable to be photocopied and cracked.

特别是，OURTP材料越来越被认为是安全印刷中记录油墨的有前途的替代品，因为它们具有超长寿命和可调发射颜色的多重特性，可以使印刷的信息不能被影印和破解。

Despite the huge advantages of OURTP materials in security printing, developing high-performance OURTP inks is still in the infancy on account of the intrinsic difficulties in simultaneously satisfying the requirements of ambient and amorphous afterglow emission, water solubility, full-color emitting, ultralong lifetime, and high phosphorescence quantum efficiency; all of them will lead to the bottlenecks of image quality and processability in security printing, leaving OURTP inks far from the rigorous requirements of commercial applications.

尽管OURTP材料在安全印刷中具有巨大的优势，但是由于同时满足环境和无定形余辉发光、水溶性、全色发光、超长寿命和高磷光量子效率的内在困难，开发高性能OURTP油墨仍处于起步阶段；所有这些都将导致防伪印刷中图像质量和加工性能的瓶颈，使我们的油墨远远达不到商业应用的严格要求。

重点词汇

phosphorescence磷光；磷火

lifetimes一生；寿命；（lifetime的复数）

research focus研究重点；研究焦点；研究热点

multiplex错综复杂的；多路传输的；多路传送的；多放映厅的；多信息传输系统；多放映厅影剧院；并入多路传输系统

tunable音调美的；可合调的；能调出和声的；可调音的

printed information印刷信息；印刷品资料；印刷资料

photocopied影印；（photocopy的过去分词）；影印本

cracked破裂的；开裂的；疯狂的；狂热的；沙哑的；嘶哑的；刺耳的

infancy幼年；婴儿期；初期；摇篮期；未成年

afterglow夕照；晚霞；愉快回想

Förster resonance energy transfer (FRET) that transfers S1 and T1 excitons of donor (host) to the S1 of acceptor (guest) has been proved to be a concise approach to obtain full-color luminescent material systems.

Förster共振能量转移（FRET）将施主（主体）的S1和T1激子转移到受主（客体）的S1，已被证明是获得全色发光材料系统的一种简洁方法。

For instance, the delayed fluorescence with varied emission colors has been achieved by Kuila et al. through coassembling energy donor of phosphors and energy acceptors of fluorescent dyes into a rigid matrix of poly(vinylalcohol); recently, they also achieved intense phosphorescence from fluorescent guest by anchoring heavy-atom substituted cationic molecule into inorganic silicate template.

例如，Kuila等人通过将磷光体的能量供体和荧光染料的能量受体共同组装到聚乙烯醇的刚性基质中，实现了具有不同发射颜色的延迟荧光；最近，他们还通过将重原子取代的阳离子分子锚定到无机硅酸盐模板中，实现了来自荧光客体的强磷光。

Moreover, Kirch et al. observed a simultaneous and efficient dual-state FRET from both S1 and T1 states of a donor in a polymer matrix of poly(methyl methacrylate).

此外，Kirch等人从聚(甲基丙烯酸甲酯)的聚合物基质中的给体的S1和T1态观察到同时和有效的双态FRET。

Inspired by the tactful strategy in boosting full-color emission through FRET, we envision that implanting the T1-S1 phosphorescent FRET (P-FRET Fig. 1A) into host-guest material system could also be an effective strategy to effectively regulate afterglow color by adopting suitable OURTP matrix as energy donor and appropriate emissive guest as energy acceptor.

受通过FRET促进全彩发射的巧妙策略的启发，我们设想将T1-S1磷光FRET (P-FRET图1A)植入主客体材料系统中，通过采用合适的OURTP基质作为能量供体，采用合适的发射客体作为能量受体，也可以有效地调节余辉颜色。

To validate our hypothesis, by using a well-performance water-soluble amorphous polymer poly(acrylamide-co-N-vinylcarbazole) (PAMCz) with blue afterglow emission as host and a series of water-soluble and commercially available fluorescent emitters with different emissive colors ranging from green to red as guests, we designed and prepared the excellent water-soluble afterglow polymeric systems (Fig. 1B).

为了验证我们的假设，通过使用一种具有蓝色余辉发射的性能良好的水溶性无定形聚合物聚(丙烯酰胺-co-N-乙烯基咔唑)(PAMCz)作为主体，以及一系列具有从绿色到红色不同发射颜色的水溶性和市售荧光发射体作为客体，我们设计并制备了优异的水溶性余辉聚合物体系(图1B)。

Through facile regulation of the doping compositions and concentrations of guests, full-color organic afterglow was realized by on-demand modulation of the host-guest organic afterglow system.

通过对掺杂组分和客体浓度的简单调节，实现了对主客体有机余辉体系的按需调制。

Impressively, PAMCz host with the unprecedented OURTP lifetime of 4.2 s along with the successful P-FRET process facilitated by large spectral overlap between the phosphorescence spectrum of host and absorption spectrum of guest renders the multicolor fluorescent guests with the state-of-the-art ultralong afterglow emission whose lifetimes are as high as 1.8, 1.5, 2.2, and 2.8 s for green, yellow, red, and white, respectively; these properties are among the best results of organic afterglow system.

令人印象深刻的是，具有前所未有的4.2秒OURTP寿命的PAMCz主体以及由主体的磷光光谱和客体的吸收光谱之间的大光谱重叠促进的成功的P-FRET过程使得多色荧光客体具有最先进的超长余辉发射，其寿命对于绿色、黄色、红色和白色分别高达1.8、1.5、2.2和2.8秒；这些性能是有机余辉系统的最佳结果。

More notably, the developed water-soluble full-color ambient afterglow polymers can be expediently used as environmentally friendly OURTP inks in an red-green-blue (RGB) printing model to produce polychrome afterglow emission and applied to multicolor security printing.

更值得注意的是，所开发的水溶性全色室温余辉聚合物可以方便地用作红绿蓝(RGB)印刷模式中的环境友好的OURTP油墨，以产生多色余辉发光，并应用于多色防伪印刷。

Benefiting from the flexibility in manipulating photophysical properties by P-FRET, this work not only provides an effective strategy to construct full-color afterglow emission but also establishes the new conceptual on-demand manipulation of afterglow colors for multicolor security printing.

得益于P-FRET操纵光物理性质的灵活性，这项工作不仅提供了一种构建全色余辉发光的有效策略，而且为多色防伪印刷建立了余辉颜色按需操纵的新概念。

重点词汇

acceptor接受者；承兑票据的人；受体；受体原子

luminescent发冷光的

phosphors磷光质

phosphorescence磷光；磷火

anchoring抛锚；下锚；使固定；扣牢；系牢；使扎根；使基于；主持；(anchor的现在分词)；固定；任主要队员；主持节目

substituted代替；替代；（substitute的过去式和过去分词）；代替的；取代的

cationic阳离子的

silicate硅酸盐；硅酸盐矿物

methyl methacrylate甲基丙烯酸甲酯

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