Controlling the Non-Conventional Self-Assembly of Charged Block Copolymer Thin Films
발표자
최상현 (서울대학교)
연구책임자
김소연 (서울대학교)
초록
내용
The self-assembly of block copolymer in thin films has attracted great attention as a potential platform for nanopatterning. To advance future applications of BCP nanopatterning, it is essential to develop nanostructures that go beyond the conventional morphologies of BCPs. To achieve this, previous studies have employed diverse strategies such as blending, templating, and external fields.
In this study, we further expand the nanopattern library of BCPs by selective charging. Aligned BCP cylinders are charged by immersing in anionic metal complex solutions, followed by thermal annealing to induce transition into unique non-conventional morphologies. Image analysis show that the resulting morphology is determined by the defectivity of the initial aligned cylinders. Furthermore, the formation mechanism of the unique structures is revealed by structure analysis. This approach offers a facile and cheap platform for fabricating nanopatterns inaccessible with conventional BCP self-assembly.