کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9675526 1454099 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Translational diffusion in charged phospholipid bilayer membranes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Translational diffusion in charged phospholipid bilayer membranes
چکیده انگلیسی
The dielectric permittivity spectra of colloidal solutions of highly charged liposomes were analyzed. They showed two dispersion regions around 25 and <300 MHz, which are attributed to rotational diffusion of the zwitterionic phospholipid molecules, and to the diffusion of the counterion atmosphere along the liposome surface, respectively. The lateral self-diffusion coefficient was obtained from the dielectric relaxation time of the zwitterionic phospholipid. The coefficient was determined in un-deionized samples subjected to processes of 40 and 72 h deionization. The study found that the counterions, which were condensed over the liposome surface, facilitated the lateral diffusion of phospholipids within the bilayer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volumes 270–271, 1 December 2005, Pages 88-92
نویسندگان
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