Journal
LANGMUIR
Volume 35, Issue 48, Pages 15813-15824Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.9b01664
Keywords
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Funding
- National Science Foundation [CBET-1067501]
- MRSEC program at the University of Chicago [DMR-1420709]
- Air Force Office of Scientific Research (AFOSR) [FA9550-14-1-0263]
- NSF [CHE-1834750, MCB-1413613]
- NSF PREM program [DMR-0934206]
- office of the Vice President for Research
- Provost's office at the University of Oklahoma
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Langmuir monolayers of silica/gold Janus particles with two different degrees of amphiphilicity have been examined to study the significance of particle surface amphiphilicity on the structure and mechanical properties of the interfacial layers. The response of the layers to the applied compression provides insight into the nature and strength of the interparticle interactions. Different collapse modes observed for the interfacial layers are linked to the amphiphilicity of Janus particles and their configuration at the interface. Molecular dynamics simulations on nanoparticles with similar contact angles provide insight on the arrangement of particles at the interface and support our conclusion that the interfacial configuration and collapse of anisotropic particles at the air/water interface are controlled by particle amphiphilicity.
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