[Th-P] Emerging Materials and Nanoscale Devices

[Th-P-68] Humidity-Induced Sign Reversal of H₂S Response in Ligand-Functionalized SWCNT Sensors

〇RyangHa Kim¹, Kun Choi¹, KyuWon Lee¹, EunJi Lee¹, YoungLae Kim¹ (1. Kangwon National University (Korea))

Humidity-dependent sensing mechanisms in pillar[5]arene-functionalized SWCNT networks for H₂S detection were investigated. Sensors with 0.5–5mg pillar loading detect H₂S above 8ppm. Dry conditions show resistance increase via charge transfer, while humid environments induce EDL-mediated electrostatic gating and conductance enhancement.