Sensors | |
Evaluation of Complexation Ability Using a Sensor Electrode Chip Equipped with a Wireless Screening System | |
Takaaki Isoda2  Ikuko Urushibara1  Hikaru Sato1  | |
[1] AR'S CO., Ltd., 5-1, Yokohama Creation Square, Sakaecho, Kanagawa, Yokohama 221-0052, Japan;Department of Life and Environment Engineering, Faculty of Environmental Engineering, University of Kitakyushu, 1-1, Hibikino, Wakamatsu, Kitakyushu 808-0135, Japan | |
关键词: chemical adsorption; electrode; chelate; metal ion; | |
DOI : 10.3390/s120608405 | |
来源: mdpi | |
【 摘 要 】
We fabricated an electrode chip with a structure coated by an insulation layer that contains dispersed SiO2 adsorbent particles modified by an amino-group on a source-drain electrode. Voltage changes caused by chelate molecule adsorption onto electrode surfaces and by specific cation interactions were investigated. The detection of specific cations without the presence of chelate molecules on the free electrode was also examined. By comparing both sets of results the complexation ability of the studied chelate molecules onto the electrode was evaluated. Five pairs of source-drain electrodes(×8 arrays) were fabricated on a glass substrate of 20 × 30mm in size. The individual Au/Cr (1.0/0.1μm thickness) electrodes had widths of 50 μm and an inter-electrode interval of 100μm.The fabricated source-drain electrodes were further coated with an insulation layer comprising a porous SiO2 particle modified amino-group to adsorb the chelate molecules. The electrode chip was equipped with a handy-type sensor signal analyzer that was mounted on an amplifier circuit using a Miniship™ or a system in a packaged LSI device. For electrode surfaces containing different adsorbed chelate molecules an increase in the sensor voltage depended on a combination of host-guest reactions and generally decreased in the following order:5,10,15,20-tetrakis(
【 授权许可】
CC BY
© 2012 by the authors; licensee MDPI, Basel, Switzerland
【 预 览 】
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RO202003190043475ZK.pdf | 590KB | download |