Exchange and flip-flop of dimyristoyl phosphatidylcholine in liquid-crystalline, gel and two-component, two-phase large unilamellar vesicles

Biochemistry ◽  
1990 ◽  
Vol 29 (5) ◽  
pp. 1296-1303 ◽  
Author(s):  
William C. Wimley ◽  
T. E. Thompson
Keyword(s):  
Liquid Crystalline ◽  
Unilamellar Vesicles ◽  
Two Phase ◽  
Flip Flop ◽  
Large Unilamellar Vesicles ◽  
Dimyristoyl Phosphatidylcholine ◽  
Two Component ◽  
Liquid Crystalline Gel

Solution Properties and Phase Behavior of Ammonium Hexylene Octyl Succinate in Water and Water-Oil System

1970 ◽  
Vol 3 (1) ◽  
Author(s):  
Md. Hamidul Kabir ◽  
Ravshan Makhkamov ◽  
Shaila Kabir
Keyword(s):  
Critical Micelle Concentration ◽  
Phase Behavior ◽  
Liquid Crystalline ◽  
Carbon Number ◽  
Phase Region ◽  
Solution Properties ◽  
Middle Phase ◽  
Two Phase ◽  
Lamellar Liquid Crystal ◽  
Drug Ingredient

The solution properties and phase behavior of ammonium hexylene octyl succinate (HOS) was investigated in water and water-oil system. The critical micelle concentration (CMC) of HOS is lower than that of anionic surfactants having same carbon number in the lipophilic part. The phase diagrams of a water/ HOS system and water/ HOS/ C10EO8/ dodecane system were also constructed. Above critical micelle concentration, the surfactant forms a normal micellar solution (Wm) at a low surfactant concentration whereas a lamellar liquid crystalline phase (La) dominates over a wide region through the formation of a two-phase region (La+W) in the binary system. The lamellar phase is arranged in the form of a biocompatible vesicle which is very significant for the drug delivery system. The surfactant tends to be hydrophilic when it is mixed with C10EO8 and a middle-phase microemulsion (D) is appeared in the water-surfactant-dodecane system where both the water and oil soluble drug ingredient can be incorporated in the form of a dispersion. Hence, mixing can tune the hydrophile-lipophile properties of the surfactant. Key words: Ammonium hexylene octyl succinate, mixed surfactant, lamellar liquid crystal, middle-phase microemulsion. Dhaka Univ. J. Pharm. Sci. Vol.3(1-2) 2004 The full text is of this article is available at the Dhaka Univ. J. Pharm. Sci. website

A Luminescent Lyotropic Liquid-Crystalline Gel of a Water-Soluble Ir(III) Complex

2021 ◽  
pp. 116187
Author(s):  
Francesca Scarpelli ◽  
Loredana Ricciardi ◽  
Massimo La Deda ◽  
Elvira Brunelli ◽  
Alessandra Crispini ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Water Soluble ◽  
Liquid Crystalline Gel
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