In this study, we developed a new kind of dual-mode multicolored photonic crystals (PCs), which could be used as a new type of dye, and achieved multicolored patterns. This kind of PCs can exhibit not only distinct structural colors due to Bragg's law of diffraction but also non-structural colors due to fluorescence. We used ultraviolet (UV)-responsive colloidal spheres synthesized by polymerization of semi-continuous emulsions to assemble the PCs. In this synthesis, the fluorescent precursors with carbamate groups were locally restricted to the shell of prepared spheres. UV irradiation can induce photo-decomposition of the carbamate groups in the fluorescent precursors, generating amino groups in the process. This process allowed the assembled PCs to exhibit fluorescence through treatment with fluorescamine. We prepared two-dimensional (2D) multicolored photonic patterns of different sizes, with both reflection and fluorescence modes. These patterns were prepared either by vertical deposition under selective UV irradiation, or by spray coating. In addition, we fabricated three-dimensional (3D) multicolored photonic patterns using 3D templates, as well as through spray coating. The results expand the concept of responsive PCs, and offer potential applications for multicolored photonic crystal patterns (PC patterns) in the field of optical storage, color displays, and anti-counterfeiting.

在这项研究中，我们开发了一种新型的双模多色光子晶体（PC），可以将其用作新型染料，并实现了多色模式。由于布拉格定律，这种PC不仅可以显示出不同的结构色，而且由于荧光可以显示出非结构色。我们使用通过半连续乳液聚合合成的紫外线（UV）响应胶体球组装PC。在该合成中，具有氨基甲酸酯基团的荧光前体局部限于制备的球的壳。紫外线辐射可以诱导荧光前体中的氨基甲酸酯基团发生光分解，从而在此过程中产生氨基基团。此过程使组装的PC通过用荧光胺处理可以显示荧光。我们准备了具有不同大小的二维（2D）彩色光子图案，同时具有反射和荧光模式。这些图案可以通过选择性紫外线照射下的垂直沉积或喷涂来制备。此外，我们使用3D模板以及通过喷涂制作了三维（3D）彩色光子图案。结果扩展了响应式PC的概念，并为光学存储，彩色显示和防伪领域中的彩色光子晶体图案（PC图案）提供了潜在的应用。我们使用3D模板以及通过喷涂工艺制作了三维（3D）彩色光子图案。结果扩展了响应式PC的概念，并为光学存储，彩色显示和防伪领域中的彩色光子晶体图案（PC图案）提供了潜在的应用。我们使用3D模板以及通过喷涂工艺制作了三维（3D）彩色光子图案。结果扩展了响应式PC的概念，并为光学存储，彩色显示和防伪领域中的彩色光子晶体图案（PC图案）提供了潜在的应用。