molecule detection with chemical reaction on graphene surface

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K18714
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 21:Electrical and electronic engineering and related fields
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: Ikuta Takashi 東京農工大学, 工学(系)研究科(研究院), 助教 (80805929)
• Co-Investigator(Kenkyū-buntansha): 正井 宏 東京大学, 大学院総合文化研究科, 助教 (70793149)
• Project Period (FY): 2021-07-09 – 2024-03-31
• Keywords: グラフェン / 分子検出 / センサ

Outline of Final Research Achievements

In this study, we successfully detected target molecules with functional group selectivity by utilizing chemical reactions on graphene. Additionally, we achieved control over the timing of chemical reactions induced by light irradiation, enabling us to regulate the detection initiation timing through external fields. These results indicate that using chemical reactions can enhance the high sensitivity detection capabilities of graphene sensors while also improving selectivity. Moreover, this research contributes to the development of sensors with significant advantages in terms of high controllability over detection timing.

Free Research Field

二次元材料

Academic Significance and Societal Importance of the Research Achievements

グラフェンセンサを社会実装するにあたりの課題となる選択性と検出感度を飛躍的に向上させるため、官能基特異的に起きる化学反応に注目しグラフェン界面上で再現することにより溶液中でnMレベルでの生体由来物質の一つであるグルタチオンの検出に成功した。様々な評価により、高い選択性も有していることが分かり、実用的なセンサの要件の一つである選択性と感度を両立したセンサを実現した。