Curved block copolymer nanodiscs: Structure transformations in cylindrical nanopores using the nonsolvent-assisted template wetting method

Yu Liang Lin, Ming Hsiang Cheng, Chun Wei Chang, Chien Wei Chu, Chih Ting Liu, Jiun Tai Chen

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In this work, we study the structure transformations of cylinder-forming polystyrene-block-polydimethylsiloxane (PS31k-b-PDMS14.5k) confined in cylindrical nanopores. PS-b-PDMS nanotubes, nanospheres, and curved nanodiscs are ingeniously prepared by a facile template wetting strategy using anodic aluminum oxide (AAO) templates. Quantitative analyses of the structure transformations from nanospheres to curved nanodiscs are also conducted, showing that the lengths of the curved nanodiscs can be controlled by adjusting the annealing temperature and time. Furthermore, the PDMS domains of the nanostructures can be selectively etched using HF solutions, generating porous PS nanostructures. This work not only offers versatile routes to prepare block copolymer nanostructures with controlled shapes but also provides a deeper understanding of the structure transformation of block copolymers in confined geometries.

Original languageEnglish
Pages (from-to)8201-8209
Number of pages9
JournalSoft Matter
Volume15
Issue number41
DOIs
Publication statusPublished - 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics

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