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231223s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la104731w
|2 doi
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|a pubmed24n0684.xml
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|a (DE-627)NLM205144292
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|a (NLM)21244081
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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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1 |
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|a Matsumura, Atsutoshi
|e verfasserin
|4 aut
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|a Photochemical control of molecular assembly formation in a catanionic surfactant system
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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
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|2 rdacarrier
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|a Date Completed 07.06.2011
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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 Photochemical control of vesicle disintegration and reformation in aqueous solution was examined using a mixture of 4-butylazobenzene-4'-(oxyethyl)trimethylammonium bromide (AZTMA) as the photoresponsive cationic surfactant and sodium dodecylbenzenesulfonate (SDBS) as the anionic surfactant. Spontaneous vesicle formation was found in a wide-ranging composition of the trans-AZTMA/SDBS system. AZTMA molecules constituting vesicles underwent reversible trans-cis photoisomerization when irradiated with ultraviolet and visible light. Transmission electron microscopy observations using the freeze-fracture technique (FF-TEM) showed that UV light irradiation caused the vesicles to disintegrate into coarse aggregates and visible light irradiation stimulated the reformation of vesicles (normal control). A detailed investigation of the phase state and the effects of UV and visible light irradiation on the AZTMA/SDBS system with the use of electroconductivity, dynamic/static light scattering, and surface tension measurements and FF-TEM observations revealed that in the AZTMA-rich composition (AZTMA/SDBS 9:1) a micellar solution before light irradiation became a vesicular solution after UV light irradiation and visible light irradiation allowed the return to a micellar solution (reverse control). Thus, we could photochemically control the disintegration (normal control) and reformation (reverse control) of vesicles in the same system
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|a Journal Article
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|a Azo Compounds
|2 NLM
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|a Micelles
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|a Surface-Active Agents
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a azobenzene
|2 NLM
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|2 NLM
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1 |
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|a Tsuchiya, Koji
|e verfasserin
|4 aut
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1 |
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|a Torigoe, Kanjiro
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sakai, Kenichi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sakai, Hideki
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Abe, Masahiko
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 27(2011), 5 vom: 01. März, Seite 1610-7
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:27
|g year:2011
|g number:5
|g day:01
|g month:03
|g pages:1610-7
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|u http://dx.doi.org/10.1021/la104731w
|3 Volltext
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