Viscosity, Conductivity, and Electrochemical Property of Dicyanamide Ionic Liquids
The instructive structure-property relationships of ionic liquids (ILs) can be put to task-specific design of new functionalized ILs. The dicyanamide (DCA) ILs are typical CHN type ILs which are halogen free, chemical stable, low-viscous, and fuel-rich. The transport properties of DCA ionic liquids...
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| Format: | Article |
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Frontiers Media S.A.
2018-03-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | http://journal.frontiersin.org/article/10.3389/fchem.2018.00059/full |
| _version_ | 1811201058780741632 |
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| author | Wen-Li Yuan Xiao Yang Ling He Ying Xue Song Qin Guo-Hong Tao |
| author_facet | Wen-Li Yuan Xiao Yang Ling He Ying Xue Song Qin Guo-Hong Tao |
| author_sort | Wen-Li Yuan |
| collection | DOAJ |
| description | The instructive structure-property relationships of ionic liquids (ILs) can be put to task-specific design of new functionalized ILs. The dicyanamide (DCA) ILs are typical CHN type ILs which are halogen free, chemical stable, low-viscous, and fuel-rich. The transport properties of DCA ionic liquids are significant for their applications as solvents, electrolytes, and hypergolic propellants. This work systematically investigates several important transport properties of four DCA ILs ([C4mim][N(CN)2], [C4m2im][N(CN)2], N4442[N(CN)2], and N8444[N(CN)2]) including viscosity, conductivity, and electrochemical property at different temperatures. The melting points, temperature-dependent viscosities and conductivities reveal the structure-activity relationship of four DCA ILs. From the Walden plots, the imidazolium cations exhibit stronger cation–anion attraction than the ammonium cations. DCA ILs have relatively high values of electrochemical windows (EWs), which indicates that the DCA ILs are potential candidates for electrolytes in electrochemical applications. The cyclic voltammograms of Eu(III) in these DCA ILs at GC working electrode at various temperatures 303–333 K consists of quasi-reversible waves. The electrochemical properties of the DCA ILs are also dominated by the cationic structures. The current intensity (ip), the diffusion coefficients (Do), the charge transfer rate constants (ks) of Eu(III) in DCA ILs all increased with the molar conductivities increased. The cationic structure-transport property relationships of DCA ILs were constructed for designing novel functionalized ILs to fulfill specific demands. |
| first_indexed | 2024-04-12T02:15:36Z |
| format | Article |
| id | doaj.art-5a127d4728ec495eb584d01cd5e16e21 |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-04-12T02:15:36Z |
| publishDate | 2018-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-5a127d4728ec495eb584d01cd5e16e212022-12-22T03:52:16ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462018-03-01610.3389/fchem.2018.00059317021Viscosity, Conductivity, and Electrochemical Property of Dicyanamide Ionic LiquidsWen-Li YuanXiao YangLing HeYing XueSong QinGuo-Hong TaoThe instructive structure-property relationships of ionic liquids (ILs) can be put to task-specific design of new functionalized ILs. The dicyanamide (DCA) ILs are typical CHN type ILs which are halogen free, chemical stable, low-viscous, and fuel-rich. The transport properties of DCA ionic liquids are significant for their applications as solvents, electrolytes, and hypergolic propellants. This work systematically investigates several important transport properties of four DCA ILs ([C4mim][N(CN)2], [C4m2im][N(CN)2], N4442[N(CN)2], and N8444[N(CN)2]) including viscosity, conductivity, and electrochemical property at different temperatures. The melting points, temperature-dependent viscosities and conductivities reveal the structure-activity relationship of four DCA ILs. From the Walden plots, the imidazolium cations exhibit stronger cation–anion attraction than the ammonium cations. DCA ILs have relatively high values of electrochemical windows (EWs), which indicates that the DCA ILs are potential candidates for electrolytes in electrochemical applications. The cyclic voltammograms of Eu(III) in these DCA ILs at GC working electrode at various temperatures 303–333 K consists of quasi-reversible waves. The electrochemical properties of the DCA ILs are also dominated by the cationic structures. The current intensity (ip), the diffusion coefficients (Do), the charge transfer rate constants (ks) of Eu(III) in DCA ILs all increased with the molar conductivities increased. The cationic structure-transport property relationships of DCA ILs were constructed for designing novel functionalized ILs to fulfill specific demands.http://journal.frontiersin.org/article/10.3389/fchem.2018.00059/fulldicyanamide ionic liquidselectrochemistryviscosityWalden plotsdiffusion coefficients |
| spellingShingle | Wen-Li Yuan Xiao Yang Ling He Ying Xue Song Qin Guo-Hong Tao Viscosity, Conductivity, and Electrochemical Property of Dicyanamide Ionic Liquids Frontiers in Chemistry dicyanamide ionic liquids electrochemistry viscosity Walden plots diffusion coefficients |
| title | Viscosity, Conductivity, and Electrochemical Property of Dicyanamide Ionic Liquids |
| title_full | Viscosity, Conductivity, and Electrochemical Property of Dicyanamide Ionic Liquids |
| title_fullStr | Viscosity, Conductivity, and Electrochemical Property of Dicyanamide Ionic Liquids |
| title_full_unstemmed | Viscosity, Conductivity, and Electrochemical Property of Dicyanamide Ionic Liquids |
| title_short | Viscosity, Conductivity, and Electrochemical Property of Dicyanamide Ionic Liquids |
| title_sort | viscosity conductivity and electrochemical property of dicyanamide ionic liquids |
| topic | dicyanamide ionic liquids electrochemistry viscosity Walden plots diffusion coefficients |
| url | http://journal.frontiersin.org/article/10.3389/fchem.2018.00059/full |
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