Formation of a ripple phase in nanotubular dimyristoylphosphatidylcholine Bilayers confined inside nanoporous aluminum oxide substrates observed by DSC

被引：15

作者：

Alaouie, Ali M. ^{[1
]}

Smirnov, Alex I. ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA

来源：

LANGMUIR | 2006年 / 22卷 / 13期

关键词：

D O I：

10.1021/la060448z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Phase properties of substrate-supported nanotubular dimyristoylphosphatidylcholine ( DMPC) bilayers confined within nanoporous channels of anodic aluminum oxide were characterized by DSC and compared with unsupported vesicles. In addition to the main phase transition, all samples exhibited a pretransition with a characteristic midpoint hysteresis between heating and cooling scans. The pretransition indicates that nanotubular bilayers could exist in a ripple phase, whereas hysteresis points to a similarity in the phase transition mechanisms. Observance of the ripple phase in lipid nanotubes is an indication of fully hydrated and only slightly perturbed bilayer surface.

引用

页码：5563 / 5565

页数：3

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