% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Fink:604167,
      author       = {Fink, Lea and Steiner, Ariel and Szekely, Or and Szekely,
                      Pablo and Raviv, Uri},
      title        = {{S}tructure and {I}nteractions between {C}harged {L}ipid
                      {M}embranes in the {P}resence of {M}ultivalent {I}ons},
      journal      = {Langmuir},
      volume       = {35},
      number       = {30},
      issn         = {0743-7463},
      address      = {Washington, DC},
      publisher    = {ACS Publ.},
      reportid     = {PUBDB-2024-01026},
      pages        = {9694 - 9703},
      year         = {2019},
      abstract     = {When aqueous salt solutions contain multivalent ions (like
                      Ca2+ or Mg2+), strong correlation effects may lead to
                      ion-bridging, net attraction, and tight-coupling between
                      like-charged interfaces. To examine the effects of surface
                      charge density, temperature, salt type, and salt
                      concentration on the structures of tightly coupled charged
                      interfaces, we have used mixed lipid membranes, containing
                      either saturated or unsaturated tails in the presence of
                      multivalent ions. We discovered that tightly coupled
                      membrane lamellar phases, dominated by attractive
                      interactions, coexisted with weakly coupled lamellar phases,
                      dominated by repulsive interactions. To control the membrane
                      charge density, we mixed lipids with negatively charged
                      headgroups, DLPS and DOPS, with their zwitterionic analogue
                      having the same tails, DLPC and DOPC, respectively. Using
                      solution X-ray scattering we measured the lamellar repeat
                      distance, D, at different ion concentrations, temperatures,
                      and membrane charge densities. The multivalent ions tightly
                      coupled the mixed lipid bilayers whose charged lipid molar
                      fraction was between 0.1 and 1. The repeat distance of the
                      tightly coupled phase was about 4 nm for the DLPS/DLPC
                      mixtures and about 5 nm for the DOPS/DOPC mixtures. In this
                      phase, the repeat distance slightly increased with
                      increasing temperature and decreased with increasing charge
                      density. When the molar fraction of charged lipid was 0.1 or
                      0.25, a less tightly coupled phase coexisted with the
                      tightly coupled phase. The weakly coupled lamellar phase had
                      significantly larger D values, although they were
                      consistently shorter than the D values in monovalent salt
                      solutions with similar screening lengths.},
      cin          = {DOOR ; HAS-User},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {899 - ohne Topic (POF4-899)},
      pid          = {G:(DE-HGF)POF4-899},
      experiment   = {EXP:(DE-H253)D-D1.2-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31283884},
      UT           = {WOS:000479019700006},
      doi          = {10.1021/acs.langmuir.9b00778},
      url          = {https://bib-pubdb1.desy.de/record/604167},
}