Park, Sung-Joon Lee, Myung-Seok Kilic, Mehmet Emin Ryu, Junil Park, Hosik Park, You In Kim, Hyoungsoo Lee, Kwang-Ryeol Lee, Jung-Hyun 2024-01-19T09:31:09Z 2024-01-19T09:31:09Z 2023-06-29 2023-06 1530-6984 https://pubs.kist.re.kr/handle/201004/113663 Interfacialpolymerization (IP) provides a versatile platform forfabricating defect-free functional nanofilms for various applications,including molecular separation, energy, electronics, and biomedicalmaterials. Unfortunately, coupled with complex natural instabilityphenomena, the IP mechanism and key parameters underlying the structuralevolution of nanofilms, especially in the presence of surfactantsas an interface regulator, remain puzzling. Here, we interfaciallyassembled polymer nanofilm membranes at the free water-oilinterface in the presence of differently charged surfactants and comprehensivelycharacterized their structure and properties. Combined with computationalsimulations, an in situ visualization of interfacial film formationdiscovered the critical role of Marangoni instability induced by thesurfactants via various mechanisms in structurally regulating thenanofilms. Despite their different instability-triggering mechanisms,the delicate control of the surfactants enabled the fabrication ofdefect-free, ultra-permselective nanofilm membranes. Our study identifiescritical IP parameters that allow us to rationally design nanofilms,coatings, and membranes for target applications. English American Chemical Society Autonomous Interfacial Assembly of Polymer Nanofilms via Surfactant-Regulated Marangoni Instability Article 10.1021/acs.nanolett.3c00374 1 Nano Letters, v.23, no.11, pp.4822 - 4829 Nano Letters 23 11 4822 4829 N scie scopus 001008296900001 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article LIQUID-LIQUID SYSTEMS POLYAMIDE MEMBRANES OSMOSIS MEMBRANES FABRICATION MORPHOLOGY TRANSPORT interfacial polymerization surfactants polymernanofilms membranes instability