Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 131, Issue 4, Pages 1356-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja808092v
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- National Science Council [NSC 97-2120-M-007-013]
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Three-dimensional hexagonally packed PLLA nanohelices in the PS matrix were formed in the self-assembly of PS-PLLA chiral block copolymer. After hydrolysis of the PLLA blocks, PS with hexagonally packed helical nanochannels can be fabricated and treated as the template for the following sol-gel process. Subsequently, silica precursor mixture was introduced into the PS template by a pore-filling process. Welt-defined helical nanocomposites with SiO2 inorganic nanohelices orderly dispersed in polymeric matrix can be successfully obtained after the sot-get process. As a result, with the combination of the self-assembly of degradable block copolymers and sot-get chemistry, we suggest a novel method for the preparation of the helical nanocomposites with ordered texture.
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