کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
195778 459821 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cation adsorption at a distearoylphosphatidic acid layer adsorbed at a liquid/liquid interface
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Cation adsorption at a distearoylphosphatidic acid layer adsorbed at a liquid/liquid interface
چکیده انگلیسی

The interfacial behaviour of tetraethylammonium cations (TEA+) at a liquid–liquid interface modified with an anionic phospholipid layer, distearoyl phosphatidic acid (DSPA), is analysed, with the purpose of characterising the permeation properties of the film. The TEA+ concentration in aqueous solution and the amount of DSPA solution employed to generate the lipidic layer, were varied. The results indicate that the layer is tightly compact and the transfer of TEA+ cations by permeation does not take place. Instead of this, TEA+ ions adsorb at the polar head groups of DSPA, and these adsorbed cations could be acting as nucleation centres of DSPA molecules when the DSPA amount is low.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 52, Issue 24, 1 August 2007, Pages 6873–6879
نویسندگان
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