https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35476  Br⁻ addition > Cl⁻ addition. Our experimental observations are consistent with the recently reported solvation structure of PEO in these solutions (Stefanovic et al., 2018). The increased charge density from NO₃⁻ to Br⁻ to Cl⁻ results in greater net ionic interaction between the ionic charge centres. As PEO interacts with PAN primarily through the ammonium hydrogens of the cation, this increased ionic interaction effectively displaces the PEO, resulting in poorer solvation.]]> Wed 24 May 2023 15:03:35 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20326 Wed 11 Apr 2018 17:18:48 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20545 Wed 11 Apr 2018 16:45:55 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:10418 Wed 11 Apr 2018 16:21:59 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:21264 q) functions derived from diffraction and scattering data (HEXRD and SAXS/WAXS). The competition between the glyme molecules and the salt anions for the coordination to the lithium cations is quantified by comprehensive aggregate analyses. Lithium-glyme solvates are dominant in the lithium bis(trifluoromethylsulfonyl)imide systems and much less so in systems based on the other two salts. The aggregation studies also emphasize the existence of complex coordination patterns between the different species (cations, anions, glyme molecules) present in the studied fluid media. The analysis of such complex behavior is extended to the conformational landscape of the anions and glyme molecules and to the dynamics (solvate diffusion) of the bis(trifluoromethylsulfonyl)imide plus triglyme system.]]> Wed 11 Apr 2018 16:08:15 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13619 Wed 11 Apr 2018 16:00:54 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:10421 Wed 11 Apr 2018 15:57:07 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26214 Wed 11 Apr 2018 15:39:03 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:10812 Wed 11 Apr 2018 15:38:48 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:23022 g) and viscosity as a function of polymer concentration allow the overlap concentrations, c* and c**, to be identified at 13 mg mL⁻¹ and 50 mg mL⁻¹, respectively, which are similar to values reported previously for conventional ionic liquids. Unlike water and conventional ionic liquids, [Li(G4)]TFSI cannot form hydrogen bonds with PEO. Thermal gravimetric analysis indicates that the solvation of PEO by [Li(G4)]TFSI is a consequence of PEO forming coordinate bonds with the lithium by displacing the anion, but without displacing the glyme molecule.]]> Wed 11 Apr 2018 15:11:45 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:7136 Wed 11 Apr 2018 15:11:41 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:18762 Wed 11 Apr 2018 14:54:37 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:10252 Wed 11 Apr 2018 14:48:59 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13676 Wed 11 Apr 2018 14:44:49 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:14997 Wed 11 Apr 2018 14:38:27 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20320 + or Cl^- is present, some Stern layer ionic liquid cations or anions (respectively) are displaced, producing starkly different structures. The Stern layer structures elucidated here significantly enhance our understanding of the ionic liquid electrical double layer.]]> Wed 11 Apr 2018 14:31:23 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20590 Wed 11 Apr 2018 13:52:57 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:21851 nanostructured, and comprise distinct polar and apolar domains produced by the solvophobic segregation of alkyl moieties. Over the last decade scattering techniques have been used to characterise the nanostructure of a diverse range of ILs. Recently, nanostructure changes in ILs produced by the dissolution of salts, polymers, small molecules and amphiphiles have begun to be elucidated. X-ray and neutron scattering have, and will continue to, play a fundamental role in understanding structure–property relationships in IL-based systems.]]> Wed 11 Apr 2018 13:29:30 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30812 Wed 11 Apr 2018 13:11:38 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30813 Wed 11 Apr 2018 12:49:41 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26256 Wed 11 Apr 2018 12:35:53 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20327 109EO₅₄, EGE₁₁₃EO₁₁₅, EGE₁₀₄EO₁₇₈, and GPrE₉₈EO₂₆₀) have been investigated between 10 and 100 °C, showing how aggregate structure changes with increasing the EO block length, by changing the insoluble block from EGE to the more bulky, hydrophobic GPrE block, and with temperature. EO solubility mainly depends on the hydrogen bond network density, and decreases in the order H₂O, EAN, and then PAN. The solubility of the EGE and GPrE blocks decreases in the order PAN, EAN then water because the large apolar domain of PAN increase the solubility of the solvophobic blocks more effectively than the smaller apolar domains in EAN, and water, which is entirely hydrophilic; GPrE is less soluble than EGE because its larger size hinders solubilization in the IL apolar domains. Large disk-shaped structures were present for EGE₁₀₉EO₅₄ in all three solvents because short EO chains favor flat structures, while GPrE₉₈EO₂₆₀ formed spherical structures because long EO chains lead to curved aggregates. The aggregate structures of EGE₁₁₃EO₁₁₅ and EGE₁₀₄EO₁₇₈, which have intermediate EO chain lengths, varied depending on the solvent and the temperature. Solubilities also explain trends in critical micelle concentrations (cmc) and temperatures (cmt).]]> Wed 11 Apr 2018 12:26:49 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:15738 Wed 11 Apr 2018 12:12:57 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20544 Wed 11 Apr 2018 12:06:41 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26887 Wed 11 Apr 2018 11:23:56 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:27045 g) and viscosity as a function of polymer concentration allow the overlap concentrations, c* and c**, to be identified at 13 mg mL(^-1) and 50 mg mL(^-1), respectively, which are similar to values reported previously for conventional ionic liquids. Unlike water and conventional ionic liquids, [Li(G4)]TFSI cannot form hydrogen bonds with PEO. Thermal gravimetric analysis indicates that the solvation of PEO by [Li(G4)]TFSI is a consequence of PEO forming coordinate bonds with the lithium by displacing the anion, but without displacing the glyme molecule.]]> Wed 11 Apr 2018 10:55:18 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:9958 Wed 11 Apr 2018 10:43:18 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:14679 Wed 11 Apr 2018 10:12:06 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13886 Tue 25 Jul 2023 12:15:37 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13677 Tue 16 Jan 2024 16:24:28 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43110 Tue 13 Sep 2022 13:36:25 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32669 Tue 10 Jul 2018 15:31:13 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55005 Thu 28 Mar 2024 13:38:10 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47419 Thu 19 Jan 2023 12:56:37 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50900 Thu 10 Aug 2023 13:18:03 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13682 Sat 24 Mar 2018 10:41:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13679 Sat 24 Mar 2018 10:41:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13730 Sat 24 Mar 2018 10:41:01 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13707 g, is 8.1 nm. This value decreases through the dilute regime according to a concentration (c) dependence of R_g ≈ c^-0.24, while above the overlap concentration a c^-1 dependence is followed. These values differ from aqueous solution behavior, which we attribute to EAN being a poorer solvent for PEO than water; EAN is in fact close to a θ solvent. The polymer structure on length scales less than 3 nm is unaffected by increasing polymer concentration, suggesting that the overall decrease in coil dimensions is a consequence of tighter packing of ~3 nm polymer “blobs” into a smaller volume.]]> Sat 24 Mar 2018 10:38:09 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13706 Sat 24 Mar 2018 10:38:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13591 Sat 24 Mar 2018 10:35:54 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13598 Sat 24 Mar 2018 10:35:07 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13602 Sat 24 Mar 2018 10:35:07 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31224 Sat 24 Mar 2018 08:43:21 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:8474 Sat 24 Mar 2018 08:42:10 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:8322 Sat 24 Mar 2018 08:36:59 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13704 Sat 24 Mar 2018 08:19:53 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:18020 Sat 24 Mar 2018 07:56:38 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:2 Sat 24 Mar 2018 07:42:11 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29904 Sat 24 Mar 2018 07:40:58 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28594 Sat 24 Mar 2018 07:37:28 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:27923 Sat 24 Mar 2018 07:36:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:27922 [Li(G4)]ClO₄ > [Li(G3)]TFSI due to decreased availability of Li⁺ for PEO coordination. For the same glyme length, the solvent qualities of SILs with TFSI⁻ and BETI⁻ anions ([Li(G4)]TFSI and [Li(G4)]BETI) are very similar because they weakly coordinate with Li⁺, which facilitates Li⁺–PEO interactions. [Li(G4)]ClO₄ presents a poorer solvent environment for PEO than [Li(G4)]BETI because ClO₄⁻ binds more strongly to Li⁺ and thereby hinders interactions with PEO. [Li(G3)]TFSI is the poorest PEO solvent of these SILs because G3 binds more strongly to Li⁺ than G4. Rheological and radius of gyration (R_g) data as a function of PEO concentration show that the PEO overlap concentrations, c* and c**, are similar in the three SILs.]]> Sat 24 Mar 2018 07:36:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29990 Sat 24 Mar 2018 07:28:53 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:27760 Sat 24 Mar 2018 07:27:43 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26535 Sat 24 Mar 2018 07:23:27 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26538 Sat 24 Mar 2018 07:23:26 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:4308 Sat 24 Mar 2018 07:21:41 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:3144 Sat 24 Mar 2018 07:18:16 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24137 3+ system, less obviously for the divalent ions and not at all for monovalent ions. This difference is attributed to the strength of electrostatic interactions between metal ions and mica charge sites increasing with the ion charge, which means that divalent and (particularly) trivalent ions are located more precisely above the charged sites of the mica lattice. The images obtained allow important distinctions between metal ion adsorption at mica-water and mica-PAN interfaces to be made.]]> Sat 24 Mar 2018 07:16:33 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24931 Sat 24 Mar 2018 07:14:20 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:23753 Sat 24 Mar 2018 07:11:10 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:23913 Sat 24 Mar 2018 07:10:04 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:36404 iC₈)₂PO₂) diluted in octane lubricated as effectively as pure IL. However, until now the structure and composition of the lubricating adsorbed layer, which is critical for lubrication, was unknown. Here, the unconfined structure of the IL adsorbed layer at the oil-silica interface has been studied using neutron reflectometry. Multiple neutron contrasts revealed an 8 Å thick adsorbed layer, even at 60 and 80 °C. The ratio of cations and anions in the layer was investigated by synthesizing the IL with deuterated cations and measuring its reflectivity at the oil-silica interface. At 60 °C the layer was composed of 48 ± 6 mol % P₆,₆,₆,₁₄⁺ cations, 24 ± 2 mol % (ⁱC⁸)₂PO₂⁻ anions, and 28 ± 8 mol % octane, while at 80 °C the composition was 50 ± 2 mol % P₆,₆,₆,₁₄⁺, 28 ± 2 mol % (ⁱC₈)₂PO₂⁻ anions, and 22 ± 2 mol % octane. These results reinforce the importance of the judicious selection of IL cations and anions for charged surfaces and support their use in high-temperature applications.]]> Mon 27 Apr 2020 13:54:03 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20324 Fri 28 Aug 2015 14:20:28 AEST ]]>