向结构色的有序自乳化
Organized Self-Emulsification toward Structural Color
摘要：
在刚性瓶刷两亲嵌段共聚物的存在下，水包油包水（W/O/W）双重乳液的形成可以通过有组织的自乳化机制得到很好的控制。具有良好控制的直径的纳米尺度水滴在微米尺度油滴内形成有序的空间排列。在溶剂蒸发后，获得具有六边形紧密堆积的纳米孔阵列的固体微球，导致明亮的结构色。通过剪裁瓶刷分子的轮廓长度，反射的颜色在整个可见光范围内精确可调。使用共聚焦激光扫描显微镜原位观察的W/O界面提供了深入了解的机制，有组织的自乳化。这项工作提供了一个强大的战略，以一种简单和可扩展的方式制造结构彩色材料。
英文摘要：
The formation of water-in-oil-in-water (W/O/W) double emulsions can be well-controlled through an organized self-emulsification mechanism in the presence of rigid bottlebrush amphiphilic block copolymers. Nanoscale water droplets with well-controlled diameters form ordered spatial arrangements within the micron-scale oil droplets. Upon solvent evaporation, solid microspheres with hexagonal close packed nanopore arrays are obtained resulting in bright structural colors. The reflected color is precisely tunable across the whole visible light range through tailoring contour length of the bottlebrush molecule. In-situ observation of the W/O interface using confocal laser scanning microscopy provides insights into the mechanism of the organized self-emulsification. This work provides a powerful strategy for the fabrication of structural colored materials in an easy and scalable manner.
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