| Miscibility behavior of two-component monolayers at the air-water interface: perfluorocarboxylic acids and DMPE. | |
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MedLine Citation:
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PMID: 19481762 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Surface pressure (pi)-molecular area (A) and surface potential (DeltaV)-A isotherms have been measured for two-component monolayers of four different perfluorocarboxylic acids [FCn; perfluorododecanoic acid (FC12), perfluorotetradecanoic acid (FC14), perfluorohexadecanoic acid (FC16), and perfluorooctadecanoic acid (FC18)] and dimyristoylphosphatidylethanolamine (DMPE) on 0.15M NaCl (pH 2) at 298.2K. The present study is focused on the miscibility and the interfacial behavior for the binary DMPE/FCn monolayers upon compression. From the isotherms, the miscibility has been elucidated in terms of the additivity rule, the interaction parameter, and the interaction energy. The interaction parameter (or energy) is compared with that for the previous dipalmitoylphosphatidylcholine (DPPC)/FCn systems [Colloids Surf. B 41 (2005) 285-298] to understand the effect of phospholipids' polar headgroup on the binary miscibility. Furthermore, the phase behavior of the DMPE/FCn systems has been morphologically examined using fluorescence microscopy (FM) and atomic force microscopy (AFM). These images reveal the different interaction modes among the four systems; DMPE can be miscible with FC12 and FC14 and immiscible with FC16 and FC18 in the monolayer state. These systematic examinations indicate that the miscibility of perfluorocarboxylic acids and phospholipids depends on combination of hydrocarbon and fluorocarbon chain lengths and on phospholipids' polar headgroups within a monolayer. |
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Authors:
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Hiroki Yokoyama; Hiromichi Nakahara; Takahiro Nakagawa; Satoshi Shimono; Kunihiko Sueishi; Osamu Shibata |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-05-12 |
Journal Detail:
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Title: Journal of colloid and interface science Volume: 337 ISSN: 1095-7103 ISO Abbreviation: J Colloid Interface Sci Publication Date: 2009 Sep |
Date Detail:
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Created Date: 2009-07-06 Completed Date: 2009-09-03 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0043125 Medline TA: J Colloid Interface Sci Country: United States |
Other Details:
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Languages: eng Pagination: 191-200 Citation Subset: IM |
Affiliation:
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Division of Biointerfacial Science, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Air* Carboxylic Acids / chemistry* Fluorocarbons / chemistry* Microscopy, Atomic Force Microscopy, Confocal Phosphatidylethanolamines / chemistry* Surface Properties Water* |
| Chemical | |
Reg. No./Substance:
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0/Carboxylic Acids; 0/Fluorocarbons; 0/Phosphatidylethanolamines; 20255-95-2/1,2-dimyristoylphosphatidylethanolamine; 7732-18-5/Water |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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