Field-effect transition sensor for KI detection based on self-assembled calixtube monolayers

Puchnin, K.; Andrianova, M.; Kuznetsov, A.; Kovalev, V.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 7 сентября 2017 г.

Авторы: Puchnin Kirill, Andrianova Mariia, Kuznetsov Alexander, Kovalev Vladimir
Журнал: Biosensors and Bioelectronics
Том: 98
Год издания: 2017
Издательство: Pergamon Press Ltd.
Местоположение издательства: United Kingdom
Первая страница: 140
Последняя страница: 146
DOI: 10.1016/j.bios.2017.06.050
Аннотация: A series of novel calixarene-based tubes comprising different numbers of silatrane anchoring groups was synthesized. For the first time, a self-assembled monolayer (SAM) derived from calixtubes was formed on a SiO2 surface. The formation of the SAM was confirmed by X-ray photoelectron spectroscopy, scanning electron microscopy-energy dispersive X-ray analysis, and contact angle measurements. Modification of the sensitive surface of a conventional ion-selective field effect transistor (ISFET) with the afforded SAM resulted in the production of a KI-sensitive sensor. This sensor selectively determined KI compare to different alkali metal iodides: NaI, RbI, CsI; also investigation of different potassium salts (acetate, iodide, nitrate, chloride, dihydrophosphate, perchlorate) showed the highest response to KI. This sensor was successfully employed to determine the presence of KI in artificial saliva with a limit of detection of ~3×10−8 М. In addition, it was found that the detection limit of the sensor could be increased by combining the sensor with a microfluidic system. Due to the obtained sensor sensitivity and its ability to detect KI in artificial saliva, we could conclude that this sensor shows great potential for application in the determination of KI in different media, such as the human body and in biological liquids, such as saliva or urine.
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Field-effect transition sensor for KI detection based on self-assembled calixtube monolayersстатья

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