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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1021/la803452m
|2 doi
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|a pubmed24n0619.xml
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|a (DE-627)NLM185646395
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|a (NLM)19132875
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Gao, Yanan
|e verfasserin
|4 aut
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| 245 |
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|a Temperature-induced microstructural changes in ionic liquid-based microemulsions
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|c 2009
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 05.03.2009
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|a Date Revised 27.01.2009
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a In the present contribution, results concerning the effect of temperature on the nonionic surfactant Triton X-100 based 1-butyl-3-methylimidazolium tetrafluoroborate (bmimBF4)-in-cyclohexane and bmimBF4-in-toluene ionic liquid (IL) reverse microemulsions are reported. Dynamic light scattering (DLS) along with freeze-fracture transmission electron microscopy (FF-TEM) measurements revealed that the sizes of single microemulsion droplets increased with increasing temperature. However, a decreased temperature led to the appearance of droplet clusters, which have also been observed previously when the single microemulsion droplets were swollen by added bmimBF4 to a certain extent (Gao, Y. A.; Vogit, A.; Hilfert, L.; Sundmacher, K. ChemPhysChem, 2008, 9, 1603-1609). Compared to traditional aqueous microemulsions, IL microemulsions revealed relatively high temperature-independence. The droplet-shaped microstructure was always kept in a large range of temperature. The temperature-independence is ascribed to the temperature-insensitive electrostatic attraction between the solubilized bmimBF4 and Triton X-100, which was considered to be the driving force for solubilizing bmimBF4 into the cores of Triton X-100 aggregates. Two-dimensional rotating frame nuclear Overhauser effect (NOE) experiments (ROESY) further confirmed the microstructural change with temperature
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|a Journal Article
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1 |
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|a Li, Na
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hilfert, Liane
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Shaohua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zheng, Liqiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yu, Li
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 25(2009), 3 vom: 03. Feb., Seite 1360-5
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:25
|g year:2009
|g number:3
|g day:03
|g month:02
|g pages:1360-5
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| 856 |
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|u http://dx.doi.org/10.1021/la803452m
|3 Volltext
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