scholarly journals Improved Thin-layer Electrolysis Cell for Ion Transfer at the Liquid|Liquid Interface Using a Conducting Polymer-coated Electrode

2014 ◽  
Vol 30 (3) ◽  
pp. 351-357 ◽  
Author(s):  
Yumi YOSHIDA ◽  
Junya UCHIDA ◽  
Shotaro NAKAMURA ◽  
Satoshi YAMAGUCHI ◽  
Kohji MAEDA
Keyword(s):  
Thin Layer ◽  
Conducting Polymer ◽  
Liquid Interface ◽  
Electrolysis Cell ◽  
Ion Transfer ◽  
Coated Electrode

Development of an avidin sensor based on the poly(methoxy amino-β-styryl terthiophene)-coated glassy carbon electrode

2012 ◽  
Vol 90 (3) ◽  
pp. 271-277 ◽  
Author(s):  
Hakim Mehenni
Keyword(s):  
Conducting Polymer ◽  
Square Wave Voltammetry ◽  
Saline Solution ◽  
Carbon Electrode ◽  
Ion Transfer ◽  
Square Wave ◽  
Wave Voltammetry ◽  
Coated Electrode ◽  
Phosphate Buffered Saline

In this study, a simple and direct biosensor was proposed, which was based on biotin immobilized onto a conducting polymer-coated electrode, for the determination of avidin, a highly stable glycoprotein found in egg whites. Biotin was immobilized onto the electrode by covalent coupling to the primary amine group on poly-3′-(2-methoxy-5-amino-β-styryl)-(2,2′:5′,2″-terthiophene) (PMAST), and the biotin–avidin interaction was monitored by square-wave voltammetry. Incubation of the PMAST/biotin-modified coated electrode with avidin in a phosphate-buffered saline solution caused a significant change to its square-wave voltammogram, which was explained by the binding of avidin by biotin, and resulted in restricted ion transfer to and from the conducting polymer. This change was then utilized to determine avidin. Importantly, we found a linear relationship for the avidin sensor in the range of 4 × 10−14 to 3 × 10−4 mol/L, and the detection limit was determined to be approximately 10−14 mol/L.

Thermodynamics of Ion Transfer Across the Liquid|Liquid Interface at a Solid Electrode Shielded with a Thin Layer of Organic Solvent

2004 ◽  
Vol 108 (31) ◽  
pp. 11591-11595 ◽  
Author(s):  
Arkady A. Karyakin ◽  
Mikhail Yu. Vagin ◽  
Sveta Zh. Ozkan ◽  
Galina P. Karpachova
Keyword(s):  
Organic Solvent ◽  
Thin Layer ◽  
Liquid Interface ◽  
Ion Transfer ◽  
Solid Electrode

Towards the Development of a Direct Electrochemical Biodetector of Avidin Based on the Poly(chloro amino-β-styryl terthiophene)-Coated Glassy Carbon Electrode

2012 ◽  
Vol 65 (4) ◽  
pp. 395 ◽  
Author(s):  
Hakim Mehenni ◽  
Lê H. Dao
Keyword(s):  
Cyclic Voltammetry ◽  
Conducting Polymer ◽  
Glassy Carbon ◽  
Saline Solution ◽  
Cyclic Voltammogram ◽  
Carbon Electrode ◽  
Ion Transfer ◽  
Amine Group ◽  
Coated Electrode ◽  
Phosphate Buffered Saline

In this study, a simple and direct biodetector was proposed, which was based on biotin immobilized onto a conducting polymer-coated electrode, for the detection of avidin, a highly stable glycoprotein found in egg-whites. Biotin was immobilized onto the electrode by covalent coupling to the primary amine group on the poly 3′-(3-chloro-4-amino-β-styryl)-(2,2′ : 5′,2″-terthiophene) (PCAST), and the biotin–avidin interaction was monitored by cyclic voltammetry. Incubation of the PCAST/biotin-modified-coated electrode with avidin in a phosphate buffered saline solution caused a significant change to its cyclic voltammogram, which was explained by the binding of avidin by biotin, and resulted in restricted ion transfer to and from the conducting polymer. This change was then utilized to detect avidin at 4 × 10–6 mol L–1.

Hydrodynamic Study of Ion Transfer at the Liquid/Liquid Interface:  the Channel Flow Cell

2003 ◽  
Vol 75 (3) ◽  
pp. 486-493 ◽  
Author(s):  
Simon S. Hill ◽  
Robert A. W. Dryfe ◽  
Edward P. L. Roberts ◽  
Adrian C. Fisher ◽  
Kamran Yunus
Keyword(s):  
Channel Flow ◽  
Flow Cell ◽  
Liquid Interface ◽  
Ion Transfer ◽  
Hydrodynamic Study
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