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@ARTICLE{Wang:905338,
      author       = {Wang, Chen-An and Yeh, Yi-Qi and Mou, Chung-Yuan and Su,
                      Chun-Jen and Wu, Wei-Ru and Jeng, U-Ser},
      title        = {{S}mall-angle-scattering resolved catanionic unilamellar
                      vesicles as molecule carriers},
      journal      = {Materials chemistry and physics},
      volume       = {277},
      issn         = {0254-0584},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2022-00606},
      pages        = {125435},
      year         = {2022},
      abstract     = {Structure 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.},
      cin          = {JCNS-FRM-II / MLZ / JCNS-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
                      I:(DE-Juel1)JCNS-4-20201012},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-6G4},
      experiment   = {EXP:(DE-MLZ)KWS1-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000729396600005},
      doi          = {10.1016/j.matchemphys.2021.125435},
      url          = {https://juser.fz-juelich.de/record/905338},
}