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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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