講演情報
[9p-A33-11]Charge-Transfer Complex Modulated MoS2 Surface for ppb-Level Acetone Sensing at Room Temperature
〇(D)CHEN LI1, Guanting Liu1, Ramaraj Sankar Ganesh1, Mao Xu1, Hitoshi Tabata1, Daisuke Kiriya1 (1.Univ. Tokyo)
キーワード：
two dimensional materials MoS2、acetone sensor、charge transfer complex
Acetone in human breath is an important biomarker for diabetes and other metabolic disorders; however, its low concentration and weak interaction with sensing materials make sensitive detection challenging. Here, a triphenylphosphine (pph3)/iodine (I2) charge-transfer complex is employed to modify monolayer MoS2, enhancing surface reactivity and charge-transfer efficiency toward acetone molecules. The CT-derived ionic species facilitate molecular adsorption and electronic modulation of the MoS2 channel, resulting in substantially improved sensing performance at room temperature. The developed chemo-electronic sensor demonstrates high sensitivity and ppb-level detection capability, highlighting its potential for real-time, non-invasive breath analysis and healthcare diagnostics.