Organic-based sensor for chemical detection in aqueous solution
Organic-based sensor for chemical detection in aqueous solution
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DOI：
10.1063/1.3232252
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发表时间：
2009-09-21
影响因子：
4
通讯作者：
Bonfiglio, A.
中科院分区：
文献类型：
--
作者：
Caboni, A.;Orgiu, E.;Bonfiglio, A.
我们提出了一种柔性的，基于五苯的场效应装置，用于检测水溶液中的化学物质。传感器由一个双栅晶体管组成，其中检测是通过利用浮栅终端的电荷传感能力来实现的。为了提供ph敏感性，浮栅被硫胺基团功能化，因为这些基团的质子化与溶液中h30 +离子的浓度成比例。对于现有的用于pH监测的有机基器件，我们的传感器不需要反电极，并且有机半导体不受与监测溶液接触的影响。(C) 2009年美国物理研究所。(doi: 10.1063/1.3232252)
We present a flexible, pentacene-based field-effect device, for the detection of chemical species in aqueous solution. The sensor consists in a double-gate transistor, where the detection is achieved by exploiting the charge sensing capabilities of the floating-gate terminal. To provide the pH-sensitivity, the floating gate is functionalized with thioamine groups as such groups protonize proportionally to the concentration of H3O+ ions in solution. With respect to the existing organic-based devices for pH monitoring, our sensor does not require a counterelectrode and the organic semiconductor is not affected by the contact with the monitored solution. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3232252]