Abstract
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.
Original language | English (US) |
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Pages (from-to) | 12203-12209 |
Number of pages | 7 |
Journal | ACS nano |
Volume | 14 |
Issue number | 9 |
DOIs | |
State | Published - Sep 22 2020 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- General Engineering
- General Physics and Astronomy