Effect of alcohol chain length on tubule formation in 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphocholine.

Abstract:

:Aqueous dispersions of 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphocholine, on cooling below the chain melting temperature, form hollow cylindrical structures known as 'tubules'. We have studied the formation of tubules in methanol/water, ethanol/water and n-propanol/water. For each alcohol, there is a defined window of alcohol/water ratios in which the lipid precipitates with the tubule morphology. As the chain length of alcohol is increased, the window shifts towards lower alcohol fraction. Light scattering studies show that at very low lipid concentrations the tubules self-assemble directly from the isotropic phase where as for lipid concentrations greater than 4 mg/ml an intermediate L alpha phase is observed. These results indicate that the mechanism of tubule formation may be dependent on lipid concentration.

journal_name

Chem Phys Lipids

authors

Ratna BR,Baral-Tosh S,Kahn B,Schnur JM,Rudolph AS

doi

10.1016/0009-3084(92)90021-g

subject

Has Abstract

pub_date

1992-11-01 00:00:00

pages

47-53

issue

1-2

eissn

0009-3084

issn

1873-2941

pii

0009-3084(92)90021-G

journal_volume

63

pub_type

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