Highly Transparent, Robust Hydrophobic, and Amphiphilic Organic–Inorganic Hybrid Coatings for Antifogging and Antibacterial Applications
| Autor: | Shuai Yuan, Won-Ki Lee, Xi-Hui Li, Liyi Shi, Yubin Jeon, Chang-Sik Ha, Joon-Hee Lee, Saravanan Nagappan |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Surface Properties 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Contact angle Surface-Active Agents chemistry.chemical_compound Coated Materials Biocompatible Coating Escherichia coli Organometallic Compounds General Materials Science Particle Size Trimethylolpropane Molecular Structure Substrate (chemistry) 021001 nanoscience & nanotechnology Anti-Bacterial Agents 0104 chemical sciences chemistry Chemical engineering Pseudomonas aeruginosa Polycaprolactone engineering Wetting 0210 nano-technology Hybrid material Hydrophobic and Hydrophilic Interactions Layer (electronics) |
| Zdroj: | ACS Applied Materials & Interfaces. 13:6615-6630 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.0c20401 |
| Popis: | The control of surface wettability through a combination of surface roughness, chemical composition, and structural modification has attracted significant attention for antifogging and antibacterial applications. Herein, a two-step spin-coating method for amphiphilic organic-inorganic hybrid materials with incorporated transition metal ions is presented. The coating solution was prepared via photochemical thiol-ene click reaction between the mercapto functional group in trimethylolpropane tris(3-mercaptopropionate) and the vinyl functionalized silica precursor 3-(trimethoxysilyl)propyl methacrylate. In the first step of coating, a glass substrate was coated using a solution of metal nitrate hydrates and subsequently showed hydrophobic properties. As the second step, the spin-coated glass substrate was further coated with silica nanoparticles (SiO2 NPs) and polycaprolactone triol (PCT) suspension, where the contents of SiO2 NPs were fixed at 0.1 wt %, unless otherwise noted. The coated substrate exhibited hydrophilic properties. For comparison, the coating was also formulated with the SiO2 NPs/PCT suspension without SiO2 NPs and with 0.5 wt % SiO2 NPs as well as by adjusting different coating layer thicknesses. The surface morphology and chemical compositions of the obtained coating materials were analyzed by field emission scanning electron microscopy with energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The transparency and static contact angle of coated samples were measured by UV-visible spectrophotometry and drop shape analysis, respectively. It was concluded that our novel hybrid coating materials exhibited excellent antibacterial and antifogging properties with extremely high scratch resistance and transparency. |
| Databáze: | OpenAIRE |
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