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- W2080123807 abstract "Symmetric membrane-spanning diyne amphiphiles of different molecular designs, e.g. single-chain and identical or mixed double-chain compounds, have been synthesized, starting from 10,12-docosadiyne-1,22-diol (1) and 10,12-docosadiynylenedihydrogendimaleate (2), respectively. Esterification of 2 and/or addition of functional thiols at the maleic acid double bond yield symmetric α,ω-dipolar diyne amphiphiles which show structural resemblance to lipids found in the biomembranes of archaebacteria. Asymmetric membrane-spanning diyne amphiphiles are obtained by a straightforward route from 22-hydroxy-10,12-docosadiynoic acid (12) by acylation with functional aromatic dicarboxylic acid anhydrides. Vesicles are formed from a number of symmetric and asymmetric diyne lipid analogues on dispersion in aqueous media, as shown by light- and freeze-fracture electron microscopy and dye entrapment experiments. Stabilization of lecithin liposome membranes towards temperature-induced dye release is effected by incorporation of a macrocyclic membrane-spanning diyne amphiphile. Ultraviolet irradiation of dispersions from asymmetric diynes yields blue and red solutions, indicating that topotactical diacetylene polymerization takes place in these lipid assemblies." @default.
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- W2080123807 date "1986-01-01" @default.
- W2080123807 modified "2023-09-26" @default.
- W2080123807 title "Membrane-spanning symmetric and asymmetric diyne amphiphiles" @default.
- W2080123807 doi "https://doi.org/10.1039/dc9868100329" @default.
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