期刊
ACS NANO
卷 14, 期 9, 页码 12203-12209出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c05908
关键词
self-assembly; nanoparticle; block copolymer; interface; porous; breath figure
类别
资金
- National Research Foundation of Korea [NRF-2018R1A2B3001049]
- Science Research Center - Korea government [NRF-2017R1A5A1015365]
- National Research Foundation of Korea [4199990414483] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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.
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