کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
195668 459819 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Conducting polymer films as model biological membranes: Electrochemical and ion-exchange properties of poly(pyrrole) films doped with asparagine and glutamine
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Conducting polymer films as model biological membranes: Electrochemical and ion-exchange properties of poly(pyrrole) films doped with asparagine and glutamine
چکیده انگلیسی

This paper shows the application of conducting polymers (CPs) for constructing model biological membranes in order to study potential formation mechanism. Two amino acids, asparagine and glutamine, were incorporated in the poly(pyrrole) matrix during electrochemical polymerization. The polymer film was characterized by infrared and X-ray photoelectron spectroscopy. The film morphology was studied by atomic force microscopy. The ion-exchange behavior of PPy-Asn and PPy-Gln membranes in dependence on the conditioning solution are characterized using an open circuit potentiometric measurements. Close-to-Nernstian sensitivity was observed for the films under equilibrium. During equilibration provoked by the change in concentration of magnesium and/or calcium ions, the differences in the shape and evolution of the potential response with time were observed. The varying potential–time behavior after a bulk concentration change has been explained by a different participation of the magnesium and calcium ions on the ground diffusion layer model (DLM).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 51, Issue 11, 15 February 2006, Pages 2173–2181
نویسندگان
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