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Supported bilayer lipid membranes modified with a phosphate ionophore |
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| Authors: | Zhang Yan Li Dunlop James Phung Thai Ottova Angelica Tien H T |
| Affiliation: | aAgResearch, Grasslands Research Centre, Tennent Drive, Private Bag 11008, Palmerston North, New Zealand bDepartment of Physiology, Michigan State University, East Lansing, MI 48824, USA cDepartment of Microelectronics, Center for Interface Sciences, Microelectronics Department, Faculty of Electrical Engineering & Information Technology, Slovak Technical University, Mlynska dolina, E bloc, 812 19 Bratislava, Slovak Republic |
| Abstract: | This article reports the electrical responses of a phosphate ionophore, the cyclic polyamine 3-decyl-1,5,8-triazacyclodecane-2,4-dione (N3-cyclic amine) incorporated into metal supported bilayer lipid membranes (s-BLM). Teflon coated silver wire was used as a support. In a potentiometric mode, the ionophore had a response that was linearly related to the logarithm of HPO42− concentration and was also dependant on pH. Selectivity coefficients for other anions compared to HPO42− ions, determined by the separate solution method, fell within the range 1.73 × 10−4 to 6.38 × 10−2. |
| Keywords: | S-BLM Phosphate sensor Phosphate ionophore |
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