Study of calix[4]resorcinarene-dopamine complextion in mixed phospholipid monolayers formed at the air-water interface

被引：32

作者：

Vitovic, P.

Nikolelis, D. P.

Hianik, T. ^{[1
]}

机构：

[1] Comenius Univ, Fac Math Phys & Comp Sci, Fac Math Phys & Comp Sci, Dept Nucl Phys & Biophys, Bratislava 84248, Slovakia

[2] Univ Athens, Environm Chem Lab, Dept Chem, GR-15771 Athens, Greece

来源：

BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES | 2006年 / 1758卷 / 11期

关键词：

calix[4]resorcinarene; monolayer; surface pressure; dipole potential; dopamine; aggregates;

D O I：

10.1016/j.bbamem.2006.08.011

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

We have studied the physical properties of monolayers formed by calix[4]resorcinarene and in mixtures with dipalmitoyl phosphatidylcholine (DPPC) in various molar ratios formed at the air-water interface and at presence of dopamine in water subphase by means of measurements of surface pressure and dipole potential. We showed that both calix[4]resorcinarene as well as its mixture with DPPC form stable monolayers at the water subphase. The presence of dopamine resulted in an increase of the mean molecular area and in a decrease of the compressibility modulus of the monolayers. For mixed monolayers at higher content of calix[4]resorcinarene (> 0.2 molar fraction) a deviation from ideal miscibility took place especially for monolayers in a solid state. This can be connected with formation of aggregates of calix[4] resorcinarene. Lowest miscibility and weakest interaction of dopamine with a monolayer was observed for calix[4]resorcinarene molar fraction of 0.33 in the monolayer. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1852 / 1861

页数：10

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