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http://dx.doi.org/10.5229/JKES.2008.11.3.176

Synthesis of Several Osmium Redox Complexes and Their Electrochemical Characteristics in Biosensor  

Kim, Hyug-Han (Department of Chemistry, Dankook University)
Choi, Young-Bong (Department of Chemistry, Dankook University)
Tae, Gun-Sik (Department of Biological Science, Dankook University)
Publication Information
Journal of the Korean Electrochemical Society / v.11, no.3, 2008 , pp. 176-183 More about this Journal
Abstract
Redox complexes to transport electrodes from bioreactors to electrodes are very important part in electrochemical biosensor industry. A novel osmium redox complexes were synthesized by the coordinating pyridine group having different functional group at 4-position with osmium metal. Newly synthesized osmium complexes are described as ${[Os(dme-bpy)}_2{(ap-im)Cl]}^{+/2+}$, ${[Os(dme-bpy)}_2{(ap-im)Cl]}^{+/2+}$, ${[Os(dmo-bpy)}_2{(ap-im)Cl]}^{+/2+}$, ${[Os(dcl-bpy)}_2{(ap-im)Cl]}^{+/2+}$. We have been studied the electrochemical characteristics of these osmium complex with electrochemical techniques such as cyclic voltammetry and chronoamperommetry. Osmium redox complexes were immobilized on the screen printed carbon electrode(SPE) with deposited gold nanoparticles. The electrical signal converts the osmium redox films into an electrocatalyst for glucose oxidation. Each catalytic currents were related with the potentials of osmium complexes.
Keywords
Redox complexes; Biosensor; Voltammetry; Chronoamperommetry; Electrocatalyst;
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