Achieving saturated non-iridescent structural colors via island-like polypyrrole coating on SiO2 microspheres and enhancing their stability through a melt-curing strategy†

IF 2.6 3区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY CrystEngComm Pub Date : 2024-10-07 DOI:10.1039/D4CE00610K
Shanxiang Sheng, Meng Wu, Chao Zhi, Yongzhen Wang, Jiaguang Meng and Yaming Liu
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Abstract

High saturation and high stability are two issues that must be addressed in the practical application of structural color based on the self-assembly of colloidal microspheres. Herein, we coated SiO2 microspheres with island-like polypyrrole (PPy), a black substance that can absorb incoherent scattered light, thereby enhancing the saturation of structural colors on both black and white substrates. Besides, the irregular island-like structure prompts the SiO2@PPy microspheres to form a short-range ordered amorphous structure, exhibiting non-iridescent structural colors. Importantly, we propose a melt-curing strategy that can enhance the interaction forces between the two microspheres and between the microspheres and the substrate, thus enabling the structural colors to exhibit good stability. Even after rubbing, folding, and ultrasonic cleaning tests, the color of the cured sample remains virtually unchanged. The SiO2@PPy microspheres prepared and the melt curing strategy in this work can lay foundations for the practical application of structural colors.

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通过在二氧化硅微球上进行岛状聚吡咯涂层实现饱和非彩虹色结构色,并通过熔融固化策略提高其稳定性†。
高饱和度和高稳定性是基于胶体微球自组装的结构色实际应用中必须解决的两个问题。在这里,我们在二氧化硅微球上涂覆了岛状聚吡咯(PPy),这种黑色物质可以吸收非相干散射光,从而提高结构色在黑色和白色基底上的饱和度。此外,不规则的岛状结构促使 SiO2@PPy 微球形成短程有序无定形结构,呈现出非彩虹色的结构色彩。重要的是,我们提出的熔融固化策略可以增强两个微球之间以及微球与基底之间的相互作用力,从而使结构色表现出良好的稳定性。即使经过摩擦、折叠和超声波清洗测试,固化样品的颜色也几乎保持不变。本研究中制备的 SiO2@PPy 微球和熔融固化策略可为结构色的实际应用奠定基础。
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来源期刊
CrystEngComm
CrystEngComm 化学-化学综合
CiteScore
5.50
自引率
9.70%
发文量
747
审稿时长
1.7 months
期刊介绍: Design and understanding of solid-state and crystalline materials
期刊最新文献
Back cover Back cover Back cover Synthesis of 3D composite materials based on ultrathin LDH nanowalls grown in situ on graphene surface and fast-response NO2 gas sensing performance at room temperature† Variations in crystals of flufenamic acid of its methyl and tert-butyl analogues as impurities as determined by partial dissolutions†
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