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231223s2006 xx ||||| 00| ||eng c |
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|a (NLM)16732649
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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|a Pereira-Lachataignerais, J
|e verfasserin
|4 aut
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|a Effect of sodium dodecyl sulfate at different hydration conditions on dioleoyl phosphatidylcholine bilayers studied by grazing incidence X-ray diffraction
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|c 2006
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 24.07.2007
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|a Date Revised 16.11.2017
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|a published: Print
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|a Citation Status MEDLINE
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|a The effect of the surfactant content and hydration conditions in the phases of dioleoyl phosphatidylcoline (DOPC)/sodium dodecyl sulfate (SDS) mixtures was studied. To this end, surface X-ray diffraction experiments have been performed on bilayers of the mixtures deposited on hydrophobic silicon wafers by dip coating. To investigate the effect of relative humidity (RH) on bilayer organization, a humidity chamber with dry-wet air control was used, and RH values were fixed between 1 and 65%. Our results showed, in addition to the lamellar phase, a rhombohedral phase in mixtures at low hydration conditions (RH < 30%). The d spacing between lamellae increased with the RH and SDS content. This fact could be associated with a swelling effect that is probably due to the localization of water molecules between the polar headgroups of the DOPC and SDS forming the bilayers. The electron-density profiles calculated by Fourier reconstruction of the lamellar stacking for the different samples also confirmed this fact. In addition, the increase in d spacing could be related to the increase in the hydrophilic character of the mixture when the SDS content increases. The rhombohedral phase was more clearly observed in mixtures with high SDS content. Thus, the stalk structure of the rhombohedral phase could be facilitated because of the SDS contribution to inverse structures
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Lipid Bilayers
|2 NLM
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|a Phosphatidylcholines
|2 NLM
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|a Sodium Dodecyl Sulfate
|2 NLM
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|a 368GB5141J
|2 NLM
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|a 1,2-oleoylphosphatidylcholine
|2 NLM
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| 650 |
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|a EDS2L3ODLV
|2 NLM
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| 700 |
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|a Pons, R
|e verfasserin
|4 aut
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|a Amenitsch, H
|e verfasserin
|4 aut
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|a Rappolt, M
|e verfasserin
|4 aut
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|a Sartori, B
|e verfasserin
|4 aut
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|a López, O
|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 1991
|g 22(2006), 12 vom: 06. Juni, Seite 5256-60
|w (DE-627)NLM098181009
|x 0743-7463
|7 nnns
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| 773 |
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|g volume:22
|g year:2006
|g number:12
|g day:06
|g month:06
|g pages:5256-60
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