Hydroxyl Functionalized Pyridinium Ionic Liquids: Experimental and Theoretical Study on Physicochemical and Electrochemical Properties
Structurally modified hydroxyl functionalized pyridinium ionic liquids (ILs), liquid at room temperature, were synthesized and characterized. Alkylated N-(2-hydroxyethyl)-pyridinium ILs were prepared from alkylpyridines via corresponding bromide salts by N-alkylation (65–93%) and final anion exchang...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-09-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fchem.2019.00625/full |
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| author | Kallidanthiyil Chellappan Lethesh Sigvart Evjen Jaganathan Joshua Raj Denis C. D. Roux Vishwesh Venkatraman Kaushik Jayasayee Anne Fiksdahl |
| author_facet | Kallidanthiyil Chellappan Lethesh Sigvart Evjen Jaganathan Joshua Raj Denis C. D. Roux Vishwesh Venkatraman Kaushik Jayasayee Anne Fiksdahl |
| author_sort | Kallidanthiyil Chellappan Lethesh |
| collection | DOAJ |
| description | Structurally modified hydroxyl functionalized pyridinium ionic liquids (ILs), liquid at room temperature, were synthesized and characterized. Alkylated N-(2-hydroxyethyl)-pyridinium ILs were prepared from alkylpyridines via corresponding bromide salts by N-alkylation (65–93%) and final anion exchange (75–96%). Pyridinium-alkylation strongly influenced the IL physicochemical and electrochemical properties. Experimental values for the ILs physicochemical properties (density, viscosity, conductivity, and thermal decomposition temperature), were in good agreement with corresponding predicted values obtained by theoretical calculations. The pyridinium ILs have electrochemical window of 3.0–5.4 V and were thermally stable up to 405°C. The IL viscosity and density were measured over a wide temperature range (25–80°C). Pyridine alkyl-substitution strongly affected the partial positive charge on the nitrogen atom of the pyridinium cations, as shown by charge distribution calculations. On-going studies on Mg complexes of the new ILs demonstrate promising properties for high current density electrodeposition of magnesium. |
| first_indexed | 2024-12-22T15:55:16Z |
| format | Article |
| id | doaj.art-2a475bd467b14b2fb699abe0dc357c38 |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-12-22T15:55:16Z |
| publishDate | 2019-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-2a475bd467b14b2fb699abe0dc357c382022-12-21T18:20:49ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462019-09-01710.3389/fchem.2019.00625479950Hydroxyl Functionalized Pyridinium Ionic Liquids: Experimental and Theoretical Study on Physicochemical and Electrochemical PropertiesKallidanthiyil Chellappan Lethesh0Sigvart Evjen1Jaganathan Joshua Raj2Denis C. D. Roux3Vishwesh Venkatraman4Kaushik Jayasayee5Anne Fiksdahl6Department of Chemistry, Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Chemistry, Norwegian University of Science and Technology, Trondheim, NorwayCenter of Research in Ionic Liquids (CORIL), Universiti Teknologi PETRONAS, Perak, MalaysiaUniversité Grenoble Alpes (UGA), Grenoble, FranceDepartment of Chemistry, Norwegian University of Science and Technology, Trondheim, NorwaySINTEF Industry, Sustainable Energy Technology, Trondheim, NorwayDepartment of Chemistry, Norwegian University of Science and Technology, Trondheim, NorwayStructurally modified hydroxyl functionalized pyridinium ionic liquids (ILs), liquid at room temperature, were synthesized and characterized. Alkylated N-(2-hydroxyethyl)-pyridinium ILs were prepared from alkylpyridines via corresponding bromide salts by N-alkylation (65–93%) and final anion exchange (75–96%). Pyridinium-alkylation strongly influenced the IL physicochemical and electrochemical properties. Experimental values for the ILs physicochemical properties (density, viscosity, conductivity, and thermal decomposition temperature), were in good agreement with corresponding predicted values obtained by theoretical calculations. The pyridinium ILs have electrochemical window of 3.0–5.4 V and were thermally stable up to 405°C. The IL viscosity and density were measured over a wide temperature range (25–80°C). Pyridine alkyl-substitution strongly affected the partial positive charge on the nitrogen atom of the pyridinium cations, as shown by charge distribution calculations. On-going studies on Mg complexes of the new ILs demonstrate promising properties for high current density electrodeposition of magnesium.https://www.frontiersin.org/article/10.3389/fchem.2019.00625/fullcharge distributionconductivityCOSMO-RSelectrodepositionionic liquid |
| spellingShingle | Kallidanthiyil Chellappan Lethesh Sigvart Evjen Jaganathan Joshua Raj Denis C. D. Roux Vishwesh Venkatraman Kaushik Jayasayee Anne Fiksdahl Hydroxyl Functionalized Pyridinium Ionic Liquids: Experimental and Theoretical Study on Physicochemical and Electrochemical Properties Frontiers in Chemistry charge distribution conductivity COSMO-RS electrodeposition ionic liquid |
| title | Hydroxyl Functionalized Pyridinium Ionic Liquids: Experimental and Theoretical Study on Physicochemical and Electrochemical Properties |
| title_full | Hydroxyl Functionalized Pyridinium Ionic Liquids: Experimental and Theoretical Study on Physicochemical and Electrochemical Properties |
| title_fullStr | Hydroxyl Functionalized Pyridinium Ionic Liquids: Experimental and Theoretical Study on Physicochemical and Electrochemical Properties |
| title_full_unstemmed | Hydroxyl Functionalized Pyridinium Ionic Liquids: Experimental and Theoretical Study on Physicochemical and Electrochemical Properties |
| title_short | Hydroxyl Functionalized Pyridinium Ionic Liquids: Experimental and Theoretical Study on Physicochemical and Electrochemical Properties |
| title_sort | hydroxyl functionalized pyridinium ionic liquids experimental and theoretical study on physicochemical and electrochemical properties |
| topic | charge distribution conductivity COSMO-RS electrodeposition ionic liquid |
| url | https://www.frontiersin.org/article/10.3389/fchem.2019.00625/full |
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