Effect of hydration on the long-range order of lipid multilayers investigated by in situ time-resolved energy dispersive X-ray diffraction

被引：16

作者：

Caminiti, R

Caracciolo, G

Pisani, M

Bruni, P

机构：

[1] Univ Roma La Sapienza, Dipartimento Chim, I-00185 Rome, Italy

[2] Univ Politecn Marche, Dipartimento Sci Mat & Terra, I-60131 Ancona, Italy

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 409卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2005.05.044

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In situ time-resolved energy dispersive X-ray diffraction (EDXD) was applied to investigate the hydration kinetics of oriented dioleoylphosphocoline (DOPC) and 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP) membranes. The long-range order in the investigated lipid multilayers has been found to vary as a function of hydration in a nonmonotic way. In the first stage, water adsorption increased the long-range order along the normal to the lipid bilayer whereas, in the second one, a progressive loss of interbilayer coherence was observed. Possible molecular mechanisms underlying the experimental observations are discussed. (c) 2005 Elsevier B.V. All rights reserved.

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页码：331 / 336

页数：6

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