Interconnected networks: structural and dynamic characterization of aqueous dispersions of dioctanoylphosphatidylcholine |
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| Authors: | Lo Nostro Pierandrea Murgia Sergio Lagi Marco Fratini Emiliano Karlsson Göran Almgren Mats Monduzzi Maura Ninham Barry W Baglioni Piero |
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| Institution: | Department of Chemistry and CSGI, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy. pln@csgi.unifi.it. |
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| Abstract: | Aqueous dispersions of the phospholipid dioctanoylphosphatidylcholine (diC 8PC) phase-separate below a cloud-point temperature, depending on lipid concentration. The lower phase is viscous and rich in lipid. The structure and dynamics of this system were explored via cryo-transmission electron microscopy (cryo-TEM), small-angle X-ray scattering (SAXS), and NMR. The lower phase comprises a highly interconnected tridimensional network of wormlike micelles. A molecular mechanism for the phase separation is suggested. |
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