Fabrication and characterization of novel composite membranes composed of photonic crystals and TiO2 nanotube array films
Fabrication and characterization of novel composite membranes composed of photonic crystals and TiO2 nanotube array films
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光子晶体与TiO2纳米管阵列薄膜组成的新型复合膜的制备与表征
DOI：
10.1016/j.optmat.2016.03.030
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发表时间：
2016-05
影响因子：
3.9
通讯作者：
Yuan Yao
中科院分区：
文献类型：
--
作者：
Tang Junjie;Zhu Huili;Wang Aijun;Chen Sheng-Li;Yuan Yao
将我们研究组最近开发的室温浮动自组装（RTFSA）方法与液相沉积技术相结合，制备了由光子晶体（PC）和TiO 2纳米管阵列（TNA）薄膜组成的新型复合膜。采用该工艺制备了聚苯乙烯（PS）欧泊PC/TNA和TiO 2反欧泊PC/TNA复合膜。扫描电子显微镜和紫外/可见光谱分析表明，膜样品具有非常高的结晶质量。值得注意的是，PS微球从蛋白石PC膜的顶部到底部的有序堆积不受多孔TNA基底的表面粗糙度的影响。这归因于胶体颗粒的自组装机制，其在RTFSA方法中产生三维有序结构。在此，胶体颗粒的结晶发生在胶体悬浮液的表面，并且晶体生长从悬浮液的表面向下进行到基板。
Novel composite membranes composed of photonic crystals (PCs) and TiO2nanotube array (TNA) films have been fabricated by combining the room temperature floating self-assembly (RTFSA) method, recently developed by our research group, and the liquid-phase deposition technique. By applying this combined procedure, polystyrene (PS) opal PC/TNA and TiO2inverse opal PC/TNA composite membranes were prepared. Scanning electron microscopy and ultraviolet/visible spectroscopy analyses showed that the membrane samples possessed very high crystalline quality. Notably, the ordered packing of the PS microspheres from the top to the bottom of the opal PC film was not affected by the surface roughness of the porous TNA substrate. This is attributed to the self-assembly mechanism of the colloidal particles, which produces a three-dimensional ordered structure in the RTFSA method. Herein, the crystallization of the colloidal particles occurred at the surface of the colloidal suspension, and the crystal growth proceeded downward from the surface of the suspension to the substrate.
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