Organic, Transparent, and Flexible Films Exhibiting White-Light Emission via Polymer-Network Engineering: A Non-Dye-Centric Strategy

IF 7.2 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Jean C. Neto, Ayman Larek, Juan F. Miravet, Minoru Yamaji, Francisco Galindo
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引用次数: 0

Abstract

White light-emitting (WLE) materials are often engineered by tailoring fluorescent dyes to generate balanced emission spectra. In such dye-focused methodologies, the matrix plays a minimal role beyond hosting the emitters. However, this strategy can be unpredictable due to the complexity of modifying dye photophysics with precision. In the work here presented, a matrix-driven approach to WLE is introduced, where the properties of the polymeric host are leveraged to regulate light emission. By adjusting the composition of the polymer network with variation in monomers and cross-linkers, it is possible to control the spatial arrangement and interaction of two dyes, enabling effective color mixing. The system employs readily available monomers, 2-hydroxyethyl methacrylate (HEMA) and poly(ethylene glycol) dimethacrylate (PEGDMA), along with two simple, synthetically accessible dyes: a pyridinium salt and a pyrylium derivative. The resulting hydrogel-based films emit white light with Commission Internationale de l'Éclairage (CIE) chromaticity coordinates at (0.30, 0.33) and a high photoluminescence quantum yield of 0.51. The films are highly transparent, flexible, and suitable for back-illumination, making them excellent candidates for integration into next-generation optoelectronic platforms, such as bendable lighting elements, transparent displays, and wearable light sources. This strategy highlights the untapped potential of polymer matrices in fine-tuning emissive behavior.

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通过聚合物网络工程展示白光发射的有机、透明和柔性薄膜:一种非染料中心策略
白色发光(WLE)材料通常通过剪裁荧光染料来产生平衡的发射光谱。在这种染料聚焦的方法中,除了承载发射体之外,基质起着最小的作用。然而,由于精确修改染料光物理的复杂性,这种策略可能是不可预测的。在这里提出的工作中,介绍了一种矩阵驱动的WLE方法,其中利用聚合物宿主的特性来调节光发射。通过改变单体和交联剂来调整聚合物网络的组成,可以控制两种染料的空间排列和相互作用,从而实现有效的混色。该系统采用现成的单体,甲基丙烯酸2-羟乙基酯(HEMA)和聚乙二醇二甲基丙烯酸二酯(PEGDMA),以及两种简单的,可合成的染料:吡啶盐和吡啶衍生物。所得的水凝胶基薄膜发出白光,国际委员会Éclairage (CIE)色度坐标为(0.30,0.33),光致发光量子产率为0.51。这种薄膜具有高透明度、柔韧性和适合背光照明的特点,使其成为集成到下一代光电平台(如可弯曲照明元件、透明显示器和可穿戴光源)的优秀候选者。这一策略突出了聚合物基质在微调发射行为方面尚未开发的潜力。
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来源期刊
Advanced Optical Materials
Advanced Optical Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-OPTICS
CiteScore
13.70
自引率
6.70%
发文量
883
审稿时长
1.5 months
期刊介绍: Advanced Optical Materials, part of the esteemed Advanced portfolio, is a unique materials science journal concentrating on all facets of light-matter interactions. For over a decade, it has been the preferred optical materials journal for significant discoveries in photonics, plasmonics, metamaterials, and more. The Advanced portfolio from Wiley is a collection of globally respected, high-impact journals that disseminate the best science from established and emerging researchers, aiding them in fulfilling their mission and amplifying the reach of their scientific discoveries.
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