Facile method of fabricating Sn nanoparticle monolayer using solid-supported liquid–crystalline phospholipid membrane
| Autor: | Jong Ho Lee, Jung Hoon Kim, Hyeun Hwan An, Seung Jae Lee, Chong Seung Yoon, Yoon Shon, Sang-Hee Suh, Won Bae Han, Hee-Soo Kim, Im Taek Yoon |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
technology industry and agriculture General Physics and Astronomy Substrate (chemistry) Nanoparticle Surfaces and Interfaces General Chemistry Condensed Matter Physics Surfaces Coatings and Films Crystallography Membrane Chemical engineering Monolayer Particle lipids (amino acids peptides and proteins) Particle size Self-assembly Lipid bilayer |
| Zdroj: | Applied Surface Science. 257:8702-8711 |
| ISSN: | 0169-4332 |
| Popis: | 1,2-dioleoyl-sn-glycero-3-phosphatidylcholine (DOPC) phospholipid membrane was used to fabricate a tightly packed 2-dimensional array of Sn nanoparticles through direct deposition of Sn on the DOPC membrane. Major advantage of the proposed method was that the vertical ordering of the nanoparticles extended to a centimeter (2 cm × 2 cm substrate) scale in the as-prepared state. It was also shown that the particle size and morphology were altered depending on processing conditions. Experimental evidences indicated that the Sn nanoparticle surface, which spontaneously oxidized during deposition, was encapsulated by the DOPC molecules. After removing the encapsulating lipid layer, the oxide-covered Sn nanoparticles exhibited strong photoluminescence. It was also demonstrated that the Sn particle morphology and ordering are related to the lipid membrane structure and chemistry. The proposed method can be easily extended to other metals that are susceptible to oxidation to produce various metal oxide nanoparticles. |
| Databáze: | OpenAIRE |
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