Journal article
Effects of Dimethylamino Functional Group Substitution on the Physical, Structural and Radiolytic Properties of Pyridinium Ionic Liquids
Processes, Vol.14(8), 1208
04/09/2026
DOI: 10.3390/pr14081208
Abstract
A diverse range of 4-dimethylaminopyridinium (DMAP) bis(trifluoromethylsulfonyl)-amide ionic liquids with specific functionalities (alkyl, alkoxy, hydroxyalkyl and benzyl) were designed, characterized and compared with their pyridinium analogs in terms of their physical and radiolytic properties. The influence of the dimethylamino group on ionic liquid structure was investigated by X-ray diffraction and molecular dynamics simulations. The influence of the electron-donating ability of the dimethylamino-substituted cation is evident in the differences in the electronic density of states between the DMAP and pyridinium ILs. This leads to substantial changes in the radical transients observed in pulse radiolysis of the neat ILs. It was found that the DMAP salts were higher melting, more viscous and less conducting than their pyridinium analogs. However, the DMAP salts exhibited higher thermal stabilities and could therefore be useful for high-temperature applications.
Details
- Title: Subtitle
- Effects of Dimethylamino Functional Group Substitution on the Physical, Structural and Radiolytic Properties of Pyridinium Ionic Liquids
- Creators
- Matthew S. Emerson - Brookhaven National LaboratorySharon I. Lall-Ramnarine - Queensborough Community College, CUNYJasmine L. Hatcher-Lamarre - Queens College, CUNYMarie F. Thomas - Queens College, CUNYMasao Gohdo - Japan Atomic Energy AgencyBoning Wu - Rutgers, The State University of New JerseyMin Liang - Rutgers, The State University of New JerseySharon Ramati - Brookhaven National LaboratoryFei Wu - University of IowaClaudio J. Margulis - University of IowaEdward W. Castner - Rutgers, The State University of New JerseyRobert R. Engel - Queens College, CUNYJames F. Wishart - Brookhaven National Laboratory
- Resource Type
- Journal article
- Publication Details
- Processes, Vol.14(8), 1208
- DOI
- 10.3390/pr14081208
- ISSN
- 2227-9717
- eISSN
- 2227-9717
- Publisher
- MDPI
- Grant note
- U.S. Department of Energy (DOE) Office of Science User Facility: DE-AC02-06CH11357 U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences: DE-AC02-98CH10886, DE-SC0012704, DE-FG02-09ER16118, DE-SC0001780
The work at BNL and use of the LEAF of the BNL Accelerator Center for Energy Research were supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences under contracts # DE-AC02-98CH10886 and # DE-SC0012704. The work at Rutgers, the State University of New Jersey and the University of Iowa was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences under SISGR Grant # DE-FG02-09ER16118 and # DE-SC0001780, respectively. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.
- Language
- English
- Date published
- 04/09/2026
- Academic Unit
- Chemistry
- Record Identifier
- 9985153389602771
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