کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10267350 | 459451 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved enzyme retention from an electropolymerized polypyrrole-alginate matrix in the development of biosensors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
A novel pyrrole-alginate was synthesized providing a gel by Ca2+ cross-linking. The subsequent in situ electrochemical polymerization of the linked pyrrole groups at 0.93 V led to the formation of a composite polypyrrole-gel matrix exhibiting a greater enzyme retention as well as increased alginate stability towards the destructive effect of phosphate anions unlike the natural alginate gel. The presence of the electropolymerized chains was clearly indicated by the decrease of the permeability when compared to natural alginate gel, namely 2.7 Ã 10â2 and 3.65 Ã 10â1 cm sâ1 respectively, using as an electroactive permeate, hydroquinone. Moreover, the analytical performance of glucose oxidase-based composite alginate for the determination of glucose was determined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 7, Issue 12, December 2005, Pages 1277-1282
Journal: Electrochemistry Communications - Volume 7, Issue 12, December 2005, Pages 1277-1282
نویسندگان
Rodica E. Ionescu, Khalil Abu-Rabeah, Serge Cosnier, Robert S. Marks,