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Titolo:
The structural characterisation of self-assembled films of dimyristoyl phosphatidylcholine: a neutron reflectivity and Brewster angle microscopy study
Autore:
Lawrie, GA; Gunton, KA; Barnes, GT; Gentle, IR;
Indirizzi:
Univ Queensland, Dept Chem, Brisbane, Qld 4072, Australia Univ QueenslandBrisbane Qld Australia 4072 Brisbane, Qld 4072, Australia
Titolo Testata:
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
fascicolo: 1, volume: 168, anno: 2000,
pagine: 13 - 25
SICI:
0927-7757(20000731)168:1<13:TSCOSF>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
AIR-WATER-INTERFACE; SPECULAR REFLECTION; VESICLE SUSPENSION; MONOLAYERS; SURFACE; DISPERSIONS; LIPOSOMES; SPREAD; LAYERS;
Keywords:
phosphatidylcholines; self-assembly; monolayer; bilayer; neutron reflectivity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Gentle, IR Univ Queensland, Dept Chem, Brisbane, Qld 4072, Australia Univ Queensland Brisbane Qld Australia 4072 ld 4072, Australia
Citazione:
G.A. Lawrie et al., "The structural characterisation of self-assembled films of dimyristoyl phosphatidylcholine: a neutron reflectivity and Brewster angle microscopy study", COLL SURF A, 168(1), 2000, pp. 13-25

Abstract

Self-assembled films of dimyristoylphosphatidylcholine (DMPC) were formed at the air/water interface and examined by neutron reflectivity and Brewster angle microscopy to characterise their structure. The films were formed from anhydrous powder and transported to the air/water interface via a bridge from a remote reservoir. The Brewster angle microscopy results revealed that discoidal structures were associated with the film at higher surface pressures and that the population of these increased with compression. A mechanism for their formation and their subsequent role in film behaviour is suggested. A number of films were examined where the powder form of DMPC was spread directly at the air/water interface of the Langmuir trough without the bridge (in-situ films). This resulted in more heterogeneous films characterised by strings of three-dimensional structures which appeared to be multilamellar liposomes. Reflectivity studies revealed a Bragg peak representing long range order and a repeat distance of 61 Angstrom consistent with stacks of hydrated bilayers in the liposomes. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 06:25:40