講演情報
[16p-PA7-34]Chemo-Electronic MoS2 Acetone Sensor at Room Temperature via Surface modulation by A Charge Transfer Complex
〇(D)CHEN LI1, Guanting Li1, Ramaraj Sakar Ganesh1, Mao Xu1, Hitoshi Tabata1, Daisuke Kiriya1 (1.Univ. Tokyo)
キーワード：
two dimensional materials MoS2、acetone sensor、surface modulation
Acetone in human breath is a clinically relevant biomarker for metabolic disorders such as diabetes; however, its chemical inertness and trace-level concentration hinder sensitive detection. Chemo electronic sensors based on organically doped two dimensional (2D) MoS2 have attracted increasing attention due to their high surface-to-volume ratio and device compatibility. Nevertheless, pristine MoS2 exhibits weak interactions with acetone molecules, resulting in limited sensing performance. Triphenylphosphine (PPh3) reacts with iodine (I2) to form a donor acceptor charge transfer (CT) complex that can evolve into ionic species such as. This CT derived ionic modulation enhances MoS2 surface reactivity and charge transfer efficiency toward acetone adsorption, enabling real-time, non-invasive breath diagnostics for on-demand healthcare systems.