期刊
ELECTROCHIMICA ACTA
卷 421, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2022.140468
关键词
Ionic liquids; EMImBF(4); Antimony surface; Self-assembly
资金
- Estonian Research Council [PSG249]
- EU through the European Regional Development Fund [TK141 (2014-2020.4.01.15-0011)]
In this study, the adsorption behavior of organic molecules at the interface between a semi-metallic Sb(111) electrode and an ionic liquid was investigated. Two distinctive stacked adsorbed layers were identified, and their properties were studied using experimental methods and density functional theory calculations. These insights are of fundamental and practical importance in the development of nanoelectronic devices.
In this study, it has been shown that the ordering of organic molecules is not limited to a highly organised self-assembled monolayer on the electrode's surface. At the interface between semi-metallic Sb(111) electrode and ionic liquid with 4,4'-bipyridine addition, two distinctive stacked adsorbed layers upon each other have been identified by applying in situ scanning tunnelling microscopy and electrochemical impedance spectroscopy methods. The first adlayer in contact with the electrode consists of tightly packed ordered rows. The second adlayer, on top of the first, is characterised by low surface concentration, and its unit cell was obtained experimentally. In addition to experimental data, the likely distribution of 4,4'-bipyridine molecules in the first adlayer has been described using density functional theory calculations combined with machine learning. The gained insights of organic's adsorption from ionic liquids are of fundamental and practical importance in the development of nanoelectmnic devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据