کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10567342 | 972646 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of novel mediators for a glucose biosensor based on metal picolinate complexes
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
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چکیده انگلیسی
The metal complexes [Os(byp)2(pic)]+ and [Ru(byp)2(pic)]+ where byp is 2,2â²-bipyridine and HPic is o-picolinic acid were synthesised and characterised using spectroscopic and electrochemical techniques. These complexes were then evaluated as mediators for a glucose oxidase (GOx)-based biosensor. Results demonstrate the electrocatalytic behaviour of both metal couples towards regeneration of the flavoprotein GOx (FADH2) group, when co-immobilised with glucose oxidase. Surface immobilisation was achieved by potential cycling in aqueous solutions of the metal complexes at a glucose oxidase (GOx)/Nafion modified electrode. This proved successful in terms of catalytic efficiency and stability of redox sites. Kinetic parameters associated with both enzymatic and mediator reactions were estimated and the stability/performance properties of the sensor were tested.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioelectrochemistry - Volume 67, Issue 1, September 2005, Pages 23-35
Journal: Bioelectrochemistry - Volume 67, Issue 1, September 2005, Pages 23-35
نویسندگان
Susan Warren, Timothy McCormac, Eithne Dempsey,