Synthesis and Properties of Magnetic Aryl-Imidazolium Ionic Liquids with Dual Bronsted/Lewis Acidity

doi:10.3390/ma11122539

CNU IR > Pharmacy and Science > Dept. of Cosmetic Science and institute of cosmetic science > Periodical Articles > Item 310902800/32234

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/32234

Title:	Synthesis and Properties of Magnetic Aryl-Imidazolium Ionic Liquids with Dual Bronsted/Lewis Acidity
Authors:	Chang, Jui-Cheng Yang, Che-Hsuan Sun, I-Wen Ho, Wen-Yueh Wu, Tzi-Yi
Contributors:	Natl Yunlin Univ Sci & Technol, Dept Chem & Mat Engn Natl Yunlin Univ Sci & Technol, Bachelor Program Interdisciplinary Studies Natl Cheng Kung Univ, Dept Chem Chia Nan Univ Pharm & Sci, Dept Cosmet Sci
Keywords:	tunable aryl-imidazolium Bronsted/Lewis magnetic ionic liquids magnetic susceptibility magnetic coupling constant hysteresis Bronsted/Lewis properties
Date:	2018-12
Issue Date:	2019-11-15 15:46:09 (UTC+8)
Publisher:	MDPI
Abstract:	A series of unique tunable aryl-imidazolium magnetic ionic liquids (MILs) with dual acidity that contain both Bronsted and Lewis acidic sites (abbreviated as B-L MILs) were synthesized and characterized using nuclear magnetic resonance and mass spectrometry. Physical properties, such as thermal properties, magnetic susceptibility, and Bronsted and Lewis acidity, were measured. These properties were found to depend on the cation structure. These B-L MILs had good solubility in many organic solvents, good thermal stability, and low melting points, and exhibited magnet-like behavior. For these B-L MILs, the Bronsted acidity was measured using ultraviolet-visible (UV-Vis), and the Lewis acidity was measured using Fourier transform infrared spectroscopy (FTIR). The results showed that B-L MILs with an electron-withdrawing group in the aryl-imidazolium moiety had higher Bronsted acidity, whereas those with an electron-donating group had higher Lewis acidity. This type of ionic liquid, with both Bronsted and Lewis acidic sites, is expected to be a useful solvent and catalyst for organic reactions.
???metadata.dc.relation.uri???:	http://dx.doi.org/10.3390/ma11122539
Relation:	International Journal of Molecular Sciences, v.11, n.12, 2539
Appears in Collections:	[Dept. of Cosmetic Science and institute of cosmetic science] Periodical Articles

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