[D-6] Functional Devices and Application

[D-6-05] An Extended-Gate-Type Organic Field-Effect Transistor Functionalized with a Dimercapto Thiadiazole Derivative for the Detection of Mercury(II) Ions at Picomolar Level

〇Shijun Shi¹, Kohei Ohshiro¹, Qi Zhou¹, Hikaru Tanaka², Akari Yamagami², Kazutake Hagiya², Tsuyoshi Minami¹ (1. Inst. of Indus. Sci., Univ. of Tokyo (Japan), 2. TOYOBO Corp., Ltd. (Japan))

Presentation style: On-site (in-person)

https://doi.org/10.7567/SSDM.2022.D-6-05

Mercury(II) ions in environmental water (e.g., river) causes a significant risk to human health. Herein, we report an ultrasensitive detection of mercury(II) ions by an extended-gate-type organic field-effect transistor (EG-OFET). The EG-OFET functionalized with a dimercapto thiadiazole derivative-based self-assembled monolayer (SAM) realized the sensitive and selective detection of mercury(II) ions at pM levels in an aqueous solution. Moreover, a real-sample analysis was demonstrated for river water.