Inorganic Gyroid with Exceptionally Low Refractive Index from Block Copolymer Templating
Nano Letters2010Vol. 10(12), pp. 4994–5000
Citations Over TimeTop 10% of 2010 papers
Han‐Yu Hsueh, Hung-Ying Chen, Ming-Shiuan She, Chun-Ku Chen, Rong‐Ming Ho, Shangjr Gwo, Hirokazu Hasegawa, Edwin L. Thomas
Abstract
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).
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