Deposition of metal nanoparticles on phospholipid multilayer membranes modified by gramicidin.
Langmuir
; 29(43): 13251-7, 2013 Oct 29.
Article
en En
| MEDLINE
| ID: mdl-24079973
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.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Fosfolípidos
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Plata
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Estaño
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Nanopartículas del Metal
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Oro
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Gramicidina
Idioma:
En
Año:
2013
Tipo del documento:
Article