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000905338 0247_ $$2doi$$a10.1016/j.matchemphys.2021.125435
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000905338 1001_ $$0P:(DE-HGF)0$$aWang, Chen-An$$b0
000905338 245__ $$aSmall-angle-scattering resolved catanionic unilamellar vesicles as molecule carriers
000905338 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2022
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000905338 520__ $$aStructure and composition of the unilamellar vesicles (ULV) formed with catanionic surfactant of sodium dodecylsulfate (SDS) and cetyltrimethylammonium bromide (CTAB) are revealed using small-angle X-ray and neutron scattering (SAXS and SANS) and freeze-fracture-replication transmission electron microscopy (FFR-TEM). Imaging and scattering results consistently indicate a globular shape of the ULV, having a core size of 48 nm and a bilayer thickness of 32 Å; the bilayer comprises a central aliphatic shell of 24 Å, sandwiched by two headgroup shells, each of ca. 4 Å thickness. From the zero-angle scattering intensity ratio of the SAXS and SANS data, a SDS/CTAB composition ratio of 3:4 for the ULV bilayer is deduced. Poly(oxyethylene-b-oxypropylene-b-oxyethylene) (P123), a triblock copolymer, is found to intervene into the ULV bilayer of the catanionic surfactant in solution, leading to successively enlarged complex ULV, as P123 concentration in the solution increases. The ULV of SDS/CTAB is saturated with P123-loading after a critical concertation of 0.067 mM P123; thereafter, formation and proliferation of constant-sized, P123-based core-shell micelles are observed with increase of P123 concentration. A structural model of P123-embedded ULV of the catanionic surfactant is proposed. These results suggest a capacity and limits of using the catanionic ULV as molecule carriers.
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000905338 65027 $$0V:(DE-MLZ)SciArea-210$$2V:(DE-HGF)$$aSoft Condensed Matter$$x0
000905338 65017 $$0V:(DE-MLZ)GC-1602-2016$$2V:(DE-HGF)$$aPolymers, Soft Nano Particles and  Proteins$$x0
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000905338 7001_ $$0P:(DE-HGF)0$$aYeh, Yi-Qi$$b1
000905338 7001_ $$0P:(DE-HGF)0$$aMou, Chung-Yuan$$b2
000905338 7001_ $$0P:(DE-HGF)0$$aSu, Chun-Jen$$b3
000905338 7001_ $$0P:(DE-HGF)0$$aWu, Wei-Ru$$b4
000905338 7001_ $$00000-0002-2247-5061$$aJeng, U-Ser$$b5$$eCorresponding author
000905338 773__ $$0PERI:(DE-600)1491959-X$$a10.1016/j.matchemphys.2021.125435$$gVol. 277, p. 125435 -$$p125435$$tMaterials chemistry and physics$$v277$$x0254-0584$$y2022
000905338 8564_ $$uhttps://juser.fz-juelich.de/record/905338/files/Revised%20ULV%20SDS-CTAB%20MAT-PHY-CHE.pdf$$yPublished on 2021-11-16. Available in OpenAccess from 2023-11-16.
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