Nanoparticle-Induced Self-Assembly of Block Copolymers into Nanoporous Films at the Air–Water Interface

Kang, Seulki and Ryu, Du Yeol and Ringe, Emilie and Hickey, Robert J. and Park, So-Jung (2020) Nanoparticle-Induced Self-Assembly of Block Copolymers into Nanoporous Films at the Air–Water Interface. ACS Nano, 14 (9). pp. 12203-12209. ISSN 1936-0851 DOI

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Herein, we report the cooperative self-assembly of nanoparticles and block copolymers at the air–water interface, which can generate highly uniform and readily transferable composite films with tunable nanoscale architecture and functionalities. Interestingly, the incorporation of nanoparticles significantly affects the self-assembly of block copolymers at the interface. The nanoparticle-induced morphology change occurs through distinct mechanisms depending on the volume fraction of the hydrophobic block. For block copolymers with a relatively small hydrophobic volume fraction, the morphology transition occurs through the nanoparticle-induced swelling of a selective block. When the hydrophobic volume fraction is large enough, added nanoparticles promote the breath figure assembly, which generates uniform honeycomb-like porous structures with unusual nanoscale periodicity. This approach is generally applicable to various types of nanoparticles, constituting a simple one-step method to porous thin films with various functionalities.

Item Type: Article
Uncontrolled Keywords: 2020AREP; IA76
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
08 - Green Open Access
Journal or Publication Title: ACS Nano
Volume: 14
Page Range: pp. 12203-12209
Identification Number:
Depositing User: Sarah Humbert
Date Deposited: 24 Sep 2020 22:42
Last Modified: 11 Sep 2021 00:01

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