Large pore size nanoporous materials from the self-assembly of asymmetric bottlebrush block copolymers.
basic_science · Level V
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- Record sourced from PubMed, PMID 21280666.
- Also identified by DOI 10.1021/nl103747m.
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Abstract
Asymmetric polystyrene-polylactide (PS-PLA) bottlebrush block copolymers have been shown to self-assemble into a cylindrical morphology with large domain spacings. PLA cylinders can be selectively etched out of the shear-aligned polymer monoliths to generate nanoporous materials with an average cylindrical pore diameter of 55 nm. The remaining bottlebrush backbone provides a functional, hydrophilic coating inside the nanopores. This methodology significantly expands the range of pore sizes attainable in block copolymer based nanoporous materials.