Department of Chemical Engineering.
Nano Lett. 2010 Dec 8;10(12):4994-5000. doi: 10.1021/nl103104w. Epub 2010 Nov 3.
Nanoporous polymers with gyroid nanochannels can be fabricated from the self-assembly of degradable block copolymer, polystyrene-b-poly(l-lactide) (PS-PLLA), followed by the hydrolysis of PLLA blocks. A well-defined nanohybrid material with SiO2 gyroid nanostructure in a PS matrix can be obtained using the nanoporous PS as a template for sol-gel reaction. After subsequent UV degradation of the PS matrix, a highly porous inorganic gyroid network remains, yielding a single-component material with an exceptionally low refractive index (as low as 1.1).
具有向列型纳米通道的纳米多孔聚合物可以通过可降解嵌段共聚物聚苯乙烯-b-聚（L-丙交酯）（PS-PLLA）的自组装，然后水解 PLLA 嵌段来制备。通过使用纳米多孔 PS 作为溶胶-凝胶反应的模板，可以得到具有 SiO2 向列型纳米结构的 PS 基质中的纳米杂化材料。在 PS 基质随后的 UV 降解后，高度多孔的无机向列网络仍然存在，得到具有极低折射率（低至 1.1）的单一组分材料。
