2013
DOI: 10.1039/c3ra40245b
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Compression of ionic liquid when confined in porous silica nanoparticles

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Cited by 29 publications
(33 citation statements)
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References 27 publications
(23 reference statements)
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“…The melting point of P 44416 Br@SiO 2 is 61 °C, which is 8 °C lower than that of pristine P 44416 Br ( Figure 3A ). As reported in previous works [ 9 , 17 , 18 ], the nanoconfinement can lead to the enhancement of T m , while, in this case, the depression in T m of confined ILs P 44416 Br is mostly due to the choice of different cationic species. For comparison, imidazolium-based IL BmimBr was entrapped within SiO 2 , an elevation of T m was observed ( Figure 3B ).…”
Section: Resultssupporting
confidence: 69%
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“…The melting point of P 44416 Br@SiO 2 is 61 °C, which is 8 °C lower than that of pristine P 44416 Br ( Figure 3A ). As reported in previous works [ 9 , 17 , 18 ], the nanoconfinement can lead to the enhancement of T m , while, in this case, the depression in T m of confined ILs P 44416 Br is mostly due to the choice of different cationic species. For comparison, imidazolium-based IL BmimBr was entrapped within SiO 2 , an elevation of T m was observed ( Figure 3B ).…”
Section: Resultssupporting
confidence: 69%
“…For comparison, imidazolium-based IL BmimBr was entrapped within SiO 2 , an elevation of T m was observed ( Figure 3B ). In nanoconfinement, IL will be compressed leading to a reduction in distance between anion and cation [ 18 ]. We supposed that the reduction in distance between anion and cation will result in the compression of C–H···Br hydrogen bonding that exists in imidazolium-based IL, this as well as strengthened coulomb force resulting from compression play important roles leading to an increased melting point of confined ILs.…”
Section: Resultsmentioning
confidence: 99%
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“…83 This has been proposed to occur because the pore size changes the anion cation distance. 86 Ionic liquids can show order in the liquid phase, ionic liquids are so varied that all types of liquid structure can exist. Influences such as the strength of charge between the cation and the anion, polarity of the molecules, the nature of any substituent groups, and whether the molecule is amphiphilic or nonamphiphilic, all contribute to the manifestation or absence of structure.…”
Section: Fig 8 Common Ionic Liquid Cation and Anionsmentioning
confidence: 99%
“…It has been proposed that the confinement changes the cation-anion distances. These interesting changes in the properties of IL is expected due to the effect of the spatial confinement on the ordering of cation and anions within a given IL [140]. Understanding the transport properties as well as the ionic and solvent interactions of ILs enables prediction of their physicochemical properties.…”
Section: Studies Of the Reorientational Dynamics Derived From Temperature Dependent Nmr Diffusion And Relaxation Data Of Ionic Liquid Andmentioning
confidence: 99%