[16a-WL1_301-1~11] 12.7 Biomedical Engineering and Biochips

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation AwardEnglish Presentation

[16a-WL1_301-9] Paper-Based Water-Gated Organic Field-Effect Transistor and Its Glucose Sensing Applications

〇(DC)Yijing Zhang¹, Yui Sasaki^1,2, Atsushi Kurokawa³, Keiichi Sato³, Masayoshi Omori³, Mamoru Kobayashi³, Tsuyoshi Minami¹ (1.The Univ. of Tokyo, 2.JST PRESTO, 3.Lintec Co., Ltd.)

Keywords:

Organic field-effect transistor,Paper,Chemical sensor

The rapid growth of electronic waste motivates sustainable, disposable device platforms. We herein propose a paper-based chemical sensor by integrating a water-gated organic field-effect transistor (WG-OFET). Paper substrates provide an abundant, low-cost, and flexible substrate, while OFETs allow solution processability and signal amplification in chemical sensing. The operation principle of WG-OFETs relies on electric double-layer (EDL) formation at the at the interfaces of the electrolyte/semiconductor and electrolyte/gate electrode, enabling low-voltage actuation and reference-electrode-free sensing. The WG-OFET sensor functionalized with a phenylboronic acid derivative showed changes in the transistor characteristics upon glucose recognition through boronate esterification. We will present the device design, fabrication process, and sensing performance for portable, on-site glucose analysis.