Université de Pau et Pays de l'Adour, IPREM/UMR 5254/Equipe de Physique et Chimie des Polymères, Hélioparc, 2 avenue Angot, 64053 Pau Cedex 9, France.
Phys Chem Chem Phys. 2011 Jun 14;13(22):10681-9. doi: 10.1039/c0cp02517h. Epub 2011 May 6.
The enhancement of the capillarity fabrication of well-ordered two-dimensional (2D) and three-dimensional (3D) opal photonic crystal is described herein. The quality enhancement and the reduction of the fabrication time are improved by using core@soft adhesive shell (Silica@PolyButylAcrylate) particles dispersed in an organic solvent with a high boiling point. The hybridization by an elastomeric corona polymer, grafted from the SiO(2) surface, has offered adhesive properties naturally tunable by changing the polymer state from a solvated to a dry one. Such properties involve drastic changes of the self-assembly behavior and qualities. Their use, as elementary building blocks, for colloidal crystal fabrication have required a high withdrawal rate (up to 4000 μm s(-1)), i.e. involving a three order of magnitude reduction in time compared to a classic vertical deposition method (1 to 10 μm s(-1)) and a good control/prediction of the coating thickness can be tuned by varying the withdrawal rate and the particle concentration. In addition, an analysis of the 2D synthetic iridescence of the hybrid photonic crystal was performed under white light, revealing the adhesive shell bridge influence on the dissipation energy of cracks linked to the crystal quality and the photonic properties.
本文描述了有序二维（2D）和三维（3D）蛋白石光子晶体的毛细管制造的增强。通过使用分散在高沸点有机溶剂中的核@软胶壳（二氧化硅@聚丁基丙烯酸酯）颗粒，提高了质量增强和制造时间的缩短。通过弹性体冠聚合物的杂交，从 SiO2 表面接枝，可以提供自然可调的粘附性能，通过将聚合物状态从溶剂化转变为干燥来实现。这些性质涉及自组装行为和性质的剧烈变化。它们作为基本构建块用于胶体晶体制造，需要高的提取速率（高达 4000μm s-1），即与经典的垂直沉积方法（1 至 10μm s-1）相比，时间减少了三个数量级，并且可以通过改变提取速率和颗粒浓度来调节涂层厚度的控制/预测。此外，还对白光下混合光子晶体的二维合成虹彩进行了分析，揭示了胶壳桥对与晶体质量和光子特性相关的裂纹耗散能的影响。
