Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 525-529 |
| Number of pages | 5 |
| Journal | Colloids and Surfaces B: Biointerfaces |
| Volume | 178 |
| Early online date | 20 Feb 2019 |
| DOIs | |
| Publication status | Published - 1 Jun 2019 |
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Keywords
- rod-like ions
- trivalent ions
- lipid vesicles
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Interaction between charged lipid vesicles and point- or rod-like trivalent ions. / Martin-Molina, Alberto; Lue, Leo; Quesada-Perez, Manuel ; Bohinc, Klemen.
In: Colloids and Surfaces B: Biointerfaces, Vol. 178, 01.06.2019, p. 525-529.Research output: Contribution to journal › Article
TY - JOUR
T1 - Interaction between charged lipid vesicles and point- or rod-like trivalent ions
AU - Martin-Molina, Alberto
AU - Lue, Leo
AU - Quesada-Perez, Manuel
AU - Bohinc, Klemen
PY - 2019/6/1
Y1 - 2019/6/1
N2 - This work examines the influence of the charge distribution of trivalent cations on their interaction with soft anionic particles, using a combination of experimental measurements and theoretical modelling. In particular, we perform electrophoresis measurements to determine the zeta-potential of anionic liposomes in the presence of spermidine and lanthanum cations. We work in a range of electrolyte concentration where a reversal in the electrophoretic mobility of the liposomes is expected; however, unlike the case of lanthanum cations, spermidine does not induce mobility reversal of liposomes. As a result, the charge distribution within the counterion appears to be a key factor. This conclusion is supported by a theory that accounts for intra-ionic correlations, which has previously been successfully used to describe the colloidal electric double layer. It allows us to model spermidine as rod-like ions and lanthanum cations as point-like ions in order to test the importance of the ionic geometry in the interactions with soft particles such as lipid vesicles.
AB - This work examines the influence of the charge distribution of trivalent cations on their interaction with soft anionic particles, using a combination of experimental measurements and theoretical modelling. In particular, we perform electrophoresis measurements to determine the zeta-potential of anionic liposomes in the presence of spermidine and lanthanum cations. We work in a range of electrolyte concentration where a reversal in the electrophoretic mobility of the liposomes is expected; however, unlike the case of lanthanum cations, spermidine does not induce mobility reversal of liposomes. As a result, the charge distribution within the counterion appears to be a key factor. This conclusion is supported by a theory that accounts for intra-ionic correlations, which has previously been successfully used to describe the colloidal electric double layer. It allows us to model spermidine as rod-like ions and lanthanum cations as point-like ions in order to test the importance of the ionic geometry in the interactions with soft particles such as lipid vesicles.
KW - rod-like ions
KW - trivalent ions
KW - lipid vesicles
UR - https://www.sciencedirect.com/journal/colloids-and-surfaces-b-biointerfaces
U2 - 10.1016/j.colsurfb.2019.02.010
DO - 10.1016/j.colsurfb.2019.02.010
M3 - Article
VL - 178
SP - 525
EP - 529
JO - Colloids and Surfaces B: Biointerfaces
JF - Colloids and Surfaces B: Biointerfaces
SN - 0927-7765
ER -