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首页> 外文期刊>RSC Advances >Large-scale preparation of size-controlled Fe3O4@SiO2 particles for electrophoretic display with non-iridescent structural colors
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Large-scale preparation of size-controlled Fe3O4@SiO2 particles for electrophoretic display with non-iridescent structural colors

机译：大规模制备尺寸可控的Fe3O4 @ SiO2颗粒，用于非虹彩结构电泳显示

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摘要

Monodisperse colloidal particles have promising applications in electrophoretic displays with vivid colors, reversibility and low switching times. In this study, a facile, effective and large-scale strategy for preparing size-controlled Fe _(3) O _(4) @SiO _(2) particles is reported. Multiple Fe _(3) O _(4) particles were synthesized by a modified solvothermal method using sodium citrate as a surface modifier with a binary solvent, and were then coated with a SiO _(2) layer to obtain a highly negatively charged surface via a modified St?ber method. Owing to the easily controlled sizes and sufficient surface charges, Fe _(3) O _(4) @SiO _(2) particles can be assembled into colloidal amorphous arrays with the balance of electrostatic repulsion and electrophoretic forces. The reflections cover wavelengths ranging from 802 to 453 nm, and were optimized by investigating the dependence of the particles on variables such as particle size, particle volume fraction, and electric field intensity. The large-scale preparation of electrically responsive Fe _(3) O _(4) @SiO _(2) particles facilitates an electrophoretic display with broad-range colors, showing the practical potential in industrial application.
机译：单分散胶体颗粒在电泳显示器中具有鲜艳的色彩，可逆性和低切换时间，具有广阔的应用前景。在这项研究中，报道了一种制备尺寸受控的Fe _（3）O _（4）@SiO _（2）颗粒的简便，有效和大规模的策略。通过使用柠檬酸钠作为二元溶剂的表面改性剂的改进溶剂热法合成多个Fe _（3）O _（4）颗粒，然后涂覆SiO _（2）层以获得高度带负电的表面通过修改的St？ber方法。由于易于控制的尺寸和足够的表面电荷，Fe _（3）O _（4）@SiO _（2）颗粒可以组装成胶体非晶阵列，并具有静电排斥和电泳力的平衡。反射覆盖的波长范围为802至453 nm，并通过研究颗粒对变量的依赖关系进行了优化，例如颗粒大小，颗粒体积分数和电场强度。电响应性Fe _（3）O _（4）@SiO _（2）颗粒的大规模制备促进了具有宽范围颜色的电泳显示，显示了在工业应用中的实际潜力。

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