Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2.
ACS Appl Mater Interfaces. 2011 Apr;3(4):1140-7. doi: 10.1021/am1012722. Epub 2011 Mar 7.
Robust, uniform, monolithic microgel thin films can be created by actively spreading a concentrated solution of microgels onto a Au surface at 30 °C. The method is easy, fast, and seemingly universal: it can be used to coat a variety of Au coated surfaces with microgels containing different chemical functionalities. No control of the deposition conditions, other than temperature and microgel concentration, is required. We show that this technique consistently produces monolithic microgel films on Au-coated surfaces, and it has been extended to coat Si substrates. After deposition of a thin Au overlayer onto the deposited microgel layer, the materials are colored, as evidenced by multiple peaks in their reflectance spectra. The assemblies deposited using the described "paint-on" technique show increased spectral and visual purity over the entire surface area as compared to colored materials made by a previously used passive drying process.
通过在 30°C 下将微凝胶的浓缩溶液主动涂覆到 Au 表面上，可以制备出坚固、均匀、整体的微凝胶薄膜。该方法简单、快速，而且似乎具有普遍性：它可以用于用含有不同化学官能团的微凝胶涂覆各种 Au 涂覆的表面。除了温度和微凝胶浓度之外，无需控制沉积条件。我们表明，该技术在 Au 涂覆表面上始终产生整体微凝胶膜，并且已经扩展到涂覆 Si 衬底。在沉积的微凝胶层上沉积薄的 Au 覆盖层之后，材料会被着色，这可以通过其反射光谱中的多个峰来证明。与通过先前使用的被动干燥工艺制备的有色材料相比，使用所描述的“涂漆”技术沉积的组件在整个表面积上具有更高的光谱和视觉纯度。
