Effect of Temperature and Humidity on Coarsening Behavior of Au Nanoparticles Embedded in Liquid Crystalline Lipid Membrane
- Title
- Effect of Temperature and Humidity on Coarsening Behavior of Au Nanoparticles Embedded in Liquid Crystalline Lipid Membrane
- Author
- 윤종승
- Keywords
- GOLD NANOPARTICLES; ELECTRONIC-PROPERTIES; SILVER NANOPARTICLES; SIZE EVOLUTION; SOLID-STATE; THIN-FILMS; ARRAYS; PARTICLES; SURFACES
- Issue Date
- 2012-07
- Publisher
- AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
- Citation
- LANGMUIR, 28, 30, p10980-p10987
- Abstract
- Coarsening behavior of the Au nanoparticles produced by thermal evaporation of Au onto a liquid crystalline lipid (1,2-dioleoyl-3-trimethylammonium-propane, DOTAP) membrane was investigated by subjecting the nanoparticle-embedded DOTAP membrane to two different annealing conditions (at 100 degrees C under no humidity and at 20 degrees C and 80% relative humidity). Although the coarsening rate was relatively slow because of the low temperature (from 5.6 nm in the as-deposited state to similar to 7 nm after 30 h), it was identified that at 100 degrees C without humidity the Au nanoparticles resulted in shape refinement whereas the high humidity at 20 degrees C induced self-organization of the nanoparticles into a monolayer. It was also found that annealing in both cases tended to segregate the lipid molecules from the nanoparticle array case of the high-humidity sample, the lipid segregation eventually led to and forced the nanoparticles into a tighter area. In the extensive coalescence of the Au nanoparticles.
- URI
- https://pubs.acs.org/doi/10.1021/la301124d
- ISSN
- 0743-7463
- DOI
- 10.1021/la301124d
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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