Anomalously enhanced ion transport and uptake in functionalized angstrom- scale two- dimensional channels

• 成果类型: Article
• 署名作者: Wang, Mingzhan; Sadhukhan, Tumpa; Lewis, Nicholas H. C.; Wang, Maoyu; He, Xiang; Yan, Gangbin; Ying, Dongchen; Hoenig, Eli; Han, Yu; Peng, Guiming; Lee, One-Sun; Shi, Fengyuan; Tiede, David M.; Zhou, Hua; Tokmakoff, Andrei; Schatz, George C.; Liu, Chong
• 署名单位: University of Chicago; Northwestern University; SRM Institute of Science & Technology Chennai; University of Chicago; University of Chicago; United States Department of Energy (DOE); Argonne National Laboratory; United States Department of Energy (DOE); Argonne National Laboratory; United States Department of Energy (DOE); Argonne National Laboratory; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; Florida Institute of Technology; Jiangxi Normal University
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-14724
• DOI: 10.1073/pnas.2313616121
• 发表日期: 2024-01-09
• 关键词: coordination; selectivity; SPECTRA

摘要

Emulating angstrom -scale dynamics of the highly selective biological ion channels is a challenging task. Recent work on angstrom -scale artificial channels has expanded our understanding of ion transport and uptake mechanisms under confinement. However, the role of chemical environment in such channels is still not well understood. Here, we report the anomalously enhanced transport and uptake of ions under confined MoS2-based channels that are -five angstroms in size. The ion uptake preference in the MoS2-based channels can be changed by the selection of surface functional groups and ion uptake sequence due to the interplay between kinetic and thermodynamic factors that depend on whether the ions are mixed or not prior to uptake. Our work offers a holistic picture of ion transport in 2D confinement and highlights ion interplay in this regime.