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- W2330884986 abstract "In a previous study of room temperature ionic liquid/water mixtures, the first clearly observed biexponential decays in optical heterodyne-detected optical Kerr effect (OHD-OKE) experiments on a liquid were reported, (Sturlaugson, A. L.; Fruchey, K. S.; Fayer, M. D. J. Phys. Chem. B 2012, 116, 1777), and it was suggested that the biexponential behavior is indicative of the approach to gelation. Here, new OHD-OKE experiments on mixtures of the room temperature ionic liquid 1-methyl-3-octylimidazolium chloride (OmimCl) with water are presented. The OmimCl/water system is shown to gel over the water mole fraction range of 0.69–0.81. In the OHD-OKE decays, the biexponential behavior becomes more distinct as the gelling concentration range is approached from either high or low water concentrations. The biexponential decays are analyzed in terms of the wobbling-in-a-cone model, and the resulting diffusion constants and “relative” order parameters and cone angles are reported. Comparison of the OmimCl/water data with the previously reported room temperature ionic liquid/water OHD-OKE decays supports the previous hypothesis that the biexponential dynamics are due to the approach to the liquid–gel transition and suggests that the order of the concentration-dependent phase transition can be tuned by the choice of anion." @default.
- W2330884986 created "2016-06-24" @default.
- W2330884986 creator A5006944318 @default.
- W2330884986 creator A5032569802 @default.
- W2330884986 creator A5078149381 @default.
- W2330884986 creator A5086296283 @default.
- W2330884986 date "2013-11-14" @default.
- W2330884986 modified "2023-10-16" @default.
- W2330884986 title "Orientational Dynamics in a Lyotropic Room Temperature Ionic Liquid" @default.
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- W2330884986 doi "https://doi.org/10.1021/jp407325b" @default.
- W2330884986 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24171452" @default.
- W2330884986 hasPublicationYear "2013" @default.
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