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231223s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la103875w
|2 doi
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|a pubmed24n0682.xml
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|a (DE-627)NLM204638925
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|a (NLM)21188993
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Sedgwick, Myles A
|e verfasserin
|4 aut
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|a Coexisting aggregates in mixed aerosol OT and cholesterol microemulsions
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 02.05.2011
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|a Date Revised 21.11.2013
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Dynamic light scattering and NMR spectroscopic experimental evidence suggest the coexistence of two compositionally different self-assembled particles in solution. The self-assembled particles form in solutions containing water, Aerosol OT (AOT, sodium bis(2-ethylhexyl) sulfosuccinate) surfactant, and cholesterol in cyclohexane. In a similar series of studies carried out in 1-octanol only one aggregate type, that is, reverse micelles, is observed. Dynamic light scattering measurements reveal the presence of two different types of aggregates in the microemulsions formed in cyclohexane, demonstrating the coexistence of two compositionally distinct structures with very similar Gibbs energies. One particle type consists of standard AOT reverse micelles while the second type of particle consists of submicellar aggregates including cholesterol as well as small amounts of AOT and water. In microemulsions employing 1-octanol as the continuous medium, AOT reverse micelles form in a dispersed solution of cholesterol in 1-octanol. Although the size distribution of self-assembled particles is well-known for many different systems, evidence for simultaneous formation of two distinctly sized particles in solution that are chemically different is unprecedented. The ability to form microemulsion solutions that contain coexisting particles may have important applications in drug formulation and administration, particularly as applied to drug delivery using cholesterol as a targeting agent
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Micelles
|2 NLM
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|a Surface-Active Agents
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|a Water
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|a 059QF0KO0R
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|a Dioctyl Sulfosuccinic Acid
|2 NLM
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|a 10041-19-7
|2 NLM
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|a Cholesterol
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|a 97C5T2UQ7J
|2 NLM
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|a 1-Octanol
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|a NV1779205D
|2 NLM
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|a Trujillo, Alejandro M
|e verfasserin
|4 aut
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|a Hendricks, Noah
|e verfasserin
|4 aut
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| 700 |
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|a Levinger, Nancy E
|e verfasserin
|4 aut
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| 700 |
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|a Crans, Debbie C
|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 1999
|g 27(2011), 3 vom: 01. Feb., Seite 948-54
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|x 1520-5827
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|g volume:27
|g year:2011
|g number:3
|g day:01
|g month:02
|g pages:948-54
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