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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.6b02178
|2 doi
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|a pubmed24n0879.xml
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|a eng
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| 100 |
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|a Kim, Mi Ri
|e verfasserin
|4 aut
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|a Stimuli-triggered Formation of Polymersomes from W/O/W Multiple Double Emulsion Droplets Containing Poly(styrene)-block-poly(N-isopropylacrylamide-co-spironaphthoxazine methacryloyl)
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|c 2016
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 01.06.2018
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|a Date Revised 01.06.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a We report stimuli-triggered fabrication of polymersomes from water-in-oil-in-water (W/O/W) multiple double emulsion droplets and the dual-stimuli (temperature and UV) responsive behavior of corresponding polymersomes. The polymersome comprises Tween20, cholesterol, and poly(styrene)-block-poly(N-isopropylacrylamide-co-spironaphthoxazine methacryloyl), i.e., PS-b-P(NIPAAm-co-SPO), synthesized by stepwise reversible addition-fragmentation chain transfer (RAFT) polymerization. Amphiphilic PS-b-P(NIPAAm-co-SPO) copolymer forms micelles in water above the critical micelle concentration (CMC) of 0.7 g/L at 23 °C. The micelles show a temperature-driven aggregation among the micelles above 30.6 °C, confirmed by a decrease in UV-vis transmittance. The micelles also show a color change without colloidal instability under 365 nm UV at room temperature. PS-b-P(NIPAAm-co-SPO) plays not only a role of the polymeric surfactant in the preparation of W/O/W multiple double emulsions but also an important role in the stimuli-triggered transformation from multi- to single-core double emulsion droplets under heat and UV light irradiation. It was found that the morphological transformation of W/O/W multiple double emulsions by UV irradiation was much faster than temperature change. Dual-responsive polymersomes were simply prepared after solvent removal and they exhibit stable and reversible size and color variations under temperature and UV-visible changes, respectively
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Cheong, In Woo
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 32(2016), 36 vom: 13. Sept., Seite 9223-8
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:32
|g year:2016
|g number:36
|g day:13
|g month:09
|g pages:9223-8
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|u http://dx.doi.org/10.1021/acs.langmuir.6b02178
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