J Am Chem Soc. 2018 Apr 11;140(14):4761-4764. doi: 10.1021/jacs.7b13638. Epub 2018 Apr 3.
We demonstrate a solution-based fabrication of centimeter-size free-standing films assembled from organic nanocrystals based on common organic dyes (perylene diimides, PDIs). These nanostructured films exhibit good mechanical stability, and thermal robustness superior to most plastics, retaining the crystalline microstructure and macroscopic shape upon heating up to 250-300 °C. The films show nonlinear optical response and can be used as ultrafiltration membranes. The macroscopic functional materials based on small molecules can be alternative or complementary to materials based on macromolecules.
我们展示了一种基于常见有机染料（苝二酰亚胺，PDI）的有机纳米晶体的厘米级自支撑膜的溶液法制备。这些纳米结构的薄膜具有良好的机械稳定性和热稳定性，优于大多数塑料，在加热至 250-300°C 时仍能保持晶体微结构和宏观形状。这些薄膜表现出非线性光学响应，可用作超滤膜。基于小分子的宏观功能材料可以替代或补充基于大分子的材料。
