Wide Neutrality Window for Block Copolymer Vertical Orientation Using Incongruent Homopolymer Blended Brushes.

ABSTRACT: Distinctive polymer brushes (PBs) play a crucial role in providing a nonpreferential (neutral) surface for vertical orientation of block copolymers (BCPs). This bottom-up approach effectively aligns the formation of vertical lamellar and cylinder lattice structures from the BCP, which is crucial for nanopatterning and other applications. In conventional BCP self-assembly techniques, random copolymer brushes are commonly employed to achieve substrate neutrality. However, these methods face significant drawbacks, including batch variations, synthetic challenges for chemically incompatible monomers, and a narrow neutrality window. Blending homopolymer brushes to achieve mixed chemistry has been demonstrated to be effective for creating neutral substrates but requires precise blend formulation

SUBMITTER: Hillery K 

PROVIDER: S-EPMC12492326 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature