Abstract:
The monolayer behavior of a lipid containing two unsaturated alkyl chains and a nucleoside derivative as polar headgroup has been investigated by the Langmuir technique. From the surface pressure vs. molecular area isotherm, the monolayer appears as a pure liquid-expanded phase and should be then considered as a two-dimensional liquid. However, grazing incidence X-ray diffraction experiments evidence a translational order that does not exist when the lipid headgroup is a choline moiety. Since unsaturated chains are expected to induce a fluid state of the monolayer at the temperature considered, this order is likely to originate from the natural tendency nucleosides have to establish among themselves -stacking interactions between the bases. The collected X-ray data are consistent with the geometrical requirements for bases stacking.
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Received: 3 August 1998 / Revised: 16 September 1998 / Accepted: 21 September 1998
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Perez, E., Pincet, F., Goldmann, M. et al. Translational order in liquid-expanded lipid monolayers functionalized with nucleosides. Eur. Phys. J. B 6, 1–4 (1998). https://doi.org/10.1007/s100510050519
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DOI: https://doi.org/10.1007/s100510050519