Spectroscopic Analysis of 1-Butyl-3-methylimidazolium Ionic Liquids: Selection of the Charge Reference and the Electronic Environment


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Seven 1-butyl-3-methylimidazolium ionic liquids are analyzed by X-ray photoelectron spectroscopy. A reliable fitting model is developed for the C 1s region. The electronic environment of nitrogen and sulfur atoms is demonstrated. The selection of the internal charge reference is discussed in detail. It is found that when the Kamlet-Taft hydrogen bond acceptor ability value of the anion is larger than 0.75, the aliphatic carbon component can be used as a reliable reference; otherwise, in other cases, F 1s peak is applicable for the charge correction.

作者简介

Shuang Men

School of Material Science and Engineering, Shenyang Ligong University; School of Materials and Mechanical Engineering, Beijing Technology and Business University

Email: eason161028@126.com
中国, Shenyang, 110159; Beijing, 100048

Jingsong Rong

School of Material Science and Engineering, Shenyang Ligong University

Email: eason161028@126.com
中国, Shenyang, 110159

Tingting Zhang

School of Material Science and Engineering, Shenyang Ligong University

Email: eason161028@126.com
中国, Shenyang, 110159

Xueting Wang

School of Material Science and Engineering, Shenyang Ligong University

Email: eason161028@126.com
中国, Shenyang, 110159

Lu Feng

School of Material Science and Engineering, Shenyang Ligong University

Email: eason161028@126.com
中国, Shenyang, 110159

Chang Liu

School of Material Science and Engineering, Shenyang Ligong University

Email: eason161028@126.com
中国, Shenyang, 110159

Yujuan Jin

School of Materials and Mechanical Engineering, Beijing Technology and Business University

编辑信件的主要联系方式.
Email: eason161028@126.com
中国, Beijing, 100048

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