Synergistic interaction of short-chain phospholipids in the adsorbed film and micelles: Study by surface tension and dilational viscoelasticity measurements

Yuichi Takajo, Michio Yamanaka, Ramón G. Rubio, Takanori Takiue, Hiroki Matsubara, Makoto Aratono

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6 Citations (Scopus)

Abstract

The aggregate formation and surface adsorption of aqueous binary mixture of short-chain phospholipids, dihexanoyl-phosphatidylcholine (DC6PC), and dioctanoyl-phosphatidylcholine (DC8PC), were examined by surface tension and dilational viscoelasticity measurements. The concentration versus composition diagram of aggregate formation was constructed by analyzing the surface tension data. The diagram demonstrated a synergetic effect that even when the mole fraction of DC8PC in the aqueous solution was 0.02, worm-like micelle was formed and furthermore the addition of DC6PC to DC8PC solution lowered the DC8PC concentration at which worm-like micelle formation starts, although DC6PC molecules do not form worm-like micelles solely. The phase diagram of adsorption was also constructed to elucidate the miscibility of two components in the adsorbed film. The calculated excess Gibbs energy of adsorption was negative, again suggesting a synergistic attractive intermolecular interaction between two species in the adsorbed film. A staggered arrangement was proposed as a favorable intermolecular arrangement. The dilational viscoelasticity was also measured by the electrocapillary wave method, and both storage and loss modulus showed a maximum at around the surface composition of the minimum of the excess Gibbs energy of adsorption.

Original languageEnglish
Pages (from-to)1097-1104
Number of pages8
JournalJournal of Physical Chemistry C
Volume117
Issue number2
DOIs
Publication statusPublished - Jan 17 2013

Fingerprint

viscoelasticity
Phospholipids
Viscoelasticity
Micelles
worms
Surface tension
micelles
interfacial tension
Adsorption
adsorption
Gibbs free energy
diagrams
interactions
Binary mixtures
Surface structure
binary mixtures
Phase diagrams
solubility
Solubility
phase diagrams

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

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title = "Synergistic interaction of short-chain phospholipids in the adsorbed film and micelles: Study by surface tension and dilational viscoelasticity measurements",
abstract = "The aggregate formation and surface adsorption of aqueous binary mixture of short-chain phospholipids, dihexanoyl-phosphatidylcholine (DC6PC), and dioctanoyl-phosphatidylcholine (DC8PC), were examined by surface tension and dilational viscoelasticity measurements. The concentration versus composition diagram of aggregate formation was constructed by analyzing the surface tension data. The diagram demonstrated a synergetic effect that even when the mole fraction of DC8PC in the aqueous solution was 0.02, worm-like micelle was formed and furthermore the addition of DC6PC to DC8PC solution lowered the DC8PC concentration at which worm-like micelle formation starts, although DC6PC molecules do not form worm-like micelles solely. The phase diagram of adsorption was also constructed to elucidate the miscibility of two components in the adsorbed film. The calculated excess Gibbs energy of adsorption was negative, again suggesting a synergistic attractive intermolecular interaction between two species in the adsorbed film. A staggered arrangement was proposed as a favorable intermolecular arrangement. The dilational viscoelasticity was also measured by the electrocapillary wave method, and both storage and loss modulus showed a maximum at around the surface composition of the minimum of the excess Gibbs energy of adsorption.",
author = "Yuichi Takajo and Michio Yamanaka and Rubio, {Ram{\'o}n G.} and Takanori Takiue and Hiroki Matsubara and Makoto Aratono",
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T2 - Study by surface tension and dilational viscoelasticity measurements

AU - Takajo, Yuichi

AU - Yamanaka, Michio

AU - Rubio, Ramón G.

AU - Takiue, Takanori

AU - Matsubara, Hiroki

AU - Aratono, Makoto

PY - 2013/1/17

Y1 - 2013/1/17

N2 - The aggregate formation and surface adsorption of aqueous binary mixture of short-chain phospholipids, dihexanoyl-phosphatidylcholine (DC6PC), and dioctanoyl-phosphatidylcholine (DC8PC), were examined by surface tension and dilational viscoelasticity measurements. The concentration versus composition diagram of aggregate formation was constructed by analyzing the surface tension data. The diagram demonstrated a synergetic effect that even when the mole fraction of DC8PC in the aqueous solution was 0.02, worm-like micelle was formed and furthermore the addition of DC6PC to DC8PC solution lowered the DC8PC concentration at which worm-like micelle formation starts, although DC6PC molecules do not form worm-like micelles solely. The phase diagram of adsorption was also constructed to elucidate the miscibility of two components in the adsorbed film. The calculated excess Gibbs energy of adsorption was negative, again suggesting a synergistic attractive intermolecular interaction between two species in the adsorbed film. A staggered arrangement was proposed as a favorable intermolecular arrangement. The dilational viscoelasticity was also measured by the electrocapillary wave method, and both storage and loss modulus showed a maximum at around the surface composition of the minimum of the excess Gibbs energy of adsorption.

AB - The aggregate formation and surface adsorption of aqueous binary mixture of short-chain phospholipids, dihexanoyl-phosphatidylcholine (DC6PC), and dioctanoyl-phosphatidylcholine (DC8PC), were examined by surface tension and dilational viscoelasticity measurements. The concentration versus composition diagram of aggregate formation was constructed by analyzing the surface tension data. The diagram demonstrated a synergetic effect that even when the mole fraction of DC8PC in the aqueous solution was 0.02, worm-like micelle was formed and furthermore the addition of DC6PC to DC8PC solution lowered the DC8PC concentration at which worm-like micelle formation starts, although DC6PC molecules do not form worm-like micelles solely. The phase diagram of adsorption was also constructed to elucidate the miscibility of two components in the adsorbed film. The calculated excess Gibbs energy of adsorption was negative, again suggesting a synergistic attractive intermolecular interaction between two species in the adsorbed film. A staggered arrangement was proposed as a favorable intermolecular arrangement. The dilational viscoelasticity was also measured by the electrocapillary wave method, and both storage and loss modulus showed a maximum at around the surface composition of the minimum of the excess Gibbs energy of adsorption.

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