Facile method of fabricating Sn nanoparticle monolayer using solid-supported liquid-crystalline phospholipid membrane

Title
Facile method of fabricating Sn nanoparticle monolayer using solid-supported liquid-crystalline phospholipid membrane
Authors
안현환김정훈이승재한원배이종호김희수서상희윤임택윤손윤종승
Keywords
Phospholipid; Liquid-crystalline membrane; Self-assembly; Sn nanoparticle
Issue Date
2011-08
Publisher
Applied surface science
Citation
VOL 257, NO 20, 8702-8711
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/41990
ISSN
0169-4332
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KIST Publication > Article
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