One-Pot Self-Assembly of Dual-Color Domes Using Mono-Sized Silica Nanoparticles,Nano Letters

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One-Pot Self-Assembly of Dual-Color Domes Using Mono-Sized Silica Nanoparticles
Nano Letters ( IF 9.6 ) Pub Date : 2022-06-22 , DOI: 10.1021/acs.nanolett.2c01090
Chang Li ₁ , Yafeng Yu ₁ , Huizeng Li ₂ , Jingxuan Tian ₁ , Wei Guo ₁ , Yanting Shen ₁ , Huanqing Cui ₁ , Yi Pan ₁ , Yanlin Song ₂ , Ho Cheung Shum _{1,

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Affiliation

Spots with dual structural colors on the skin of some organisms in nature are of tremendous interest due to the unique function of their dye-free colors. However, imitation of them requires complicated manufacturing processes, expensive equipment, and multiple predesigned building blocks. In this work, a one-pot strategy based on the phase-separation-assisted nonuniform self-assembly of monosized silica nanoparticles is developed to construct domes with dual structural colors. In drying poly(ethylene glycol)-dextran-based (PEG-DEX) droplets, monosized nanoparticles distribute nonuniformly in two compartments due to the droplet inner flow and different nanoparticle compatibility with the two phases. The dome colors are derived from the self-assembled nanoparticles and are programmable by regulating the assembly conditions. The one-pot strategy enables the preparation of multicolor using only one type of building block. With the dual-color domes, encrypted patterns with a high volume of contents are designed, showing promising applications in information delivery.

中文翻译：

使用单尺寸二氧化硅纳米粒子的双色圆顶的一锅自组装

由于其无染料颜色的独特功能，自然界中某些生物体皮肤上具有双重结构颜色的斑点引起了极大的兴趣。然而，模仿它们需要复杂的制造工艺、昂贵的设备和多个预先设计的构建块。在这项工作中，开发了一种基于单尺寸二氧化硅纳米粒子的相分离辅助非均匀自组装的一锅策略来构建具有双结构颜色的圆顶。在干燥基于聚 (乙二醇)-葡聚糖 (PEG-DEX) 的液滴时，由于液滴内部流动和不同的纳米颗粒与两相的相容性，单一尺寸的纳米颗粒在两个隔间中分布不均匀。圆顶颜色源自自组装的纳米颗粒，可通过调节组装条件进行编程。一锅策略仅使用一种类型的构建块即可制备多色。采用双色圆顶，设计了内容量大的加密图案，在信息传递中显示出广阔的应用前景。

更新日期：2022-06-22

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