Deposition of Metal Nanoparticles on Phospholipid Multilayer Membranes Modified by Gramicidin
- Authors
- Han, Won Bae; Kim, Yongdeok; An, Hyeun Hwan; Kim, Hee-Soo; Yoon, Chong Seung
- Issue Date
- Oct-2013
- Publisher
- AMER CHEMICAL SOC
- Citation
- LANGMUIR, v.29, no.43, pp.13251 - 13257
- Indexed
- SCIE
SCOPUS
- Journal Title
- LANGMUIR
- Volume
- 29
- Number
- 43
- Start Page
- 13251
- End Page
- 13257
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/26639
- DOI
- 10.1021/la402460x
- ISSN
- 0743-7463
- Abstract
- A planar dipalmitoyl phosphatidylcholine (DPPC) multilayer phospholipid membrane was structurally modified by introducing a transmembrane protein, gramicidin (up to 25 mol %), to study its effect on the metal nanoparticles deposited on the membrane. Without gramicidin, when 3-nm-thick Ag, Sn, Al, and Au were deposited, the nanoparticles hardly nucleated on the DPPC membrane in rigid gel state (except for Au); however, the gramicidin addition dramatically enhanced the DPPC membrane surface's affinity for metal atoms so that a dense array of metal (Ag, Sn, and Au) or metal-oxide (Al-oxide) nanoparticles was produced on the membrane surface. The particle sizes ranged from 3 to 15 nm depending on the metal and gramicidin concentration, whereas the particle density was strongly dictated by the gramicidin concentration. The proposed method provides a convenient, generally applicable synthesis route for preparing different metal or metal-oxide nanoparticles on a relatively robust biocompatible membrane.
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