Aqueous phase separation in giant vesicles

Marcus R. Helfrich, Lauren K. Mangeney-Slavin, M. Scott Long, Karrera Y. Djoko, Christine Dolan Keating

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

We report the synthesis and initial characterization of ∼10 μm diameter lipid vesicles that contain two distinct aqueous phases. The aqueous two-phase system is a dextran/poly(ethylene glycol) solution that exhibits temperature-dependent phase behavior. Vesicles were prepared above the phase transition temperature of the polymer solution. Upon cooling to room temperature, the polymer solution phase separated both within the vesicles and in the bulk solution. The location of poly(ethylene glycol)-rich and dextran-rich phases was determined by fluorescence microscopy. These structures are exciting in that they enable for the first time the interior volume of liposomes to be structured.

Original languageEnglish (US)
Pages (from-to)13374-13375
Number of pages2
JournalJournal of the American Chemical Society
Volume124
Issue number45
DOIs
StatePublished - Nov 13 2002

Fingerprint

Dextran
Polymer solutions
Dextrans
Phase separation
Polyethylene glycols
Ethylene Glycol
Liposomes
Fluorescence microscopy
Phase behavior
Lipids
Superconducting transition temperature
Polymers
Phase transitions
Cooling
Temperature
Transition Temperature
Phase Transition
Fluorescence Microscopy

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Helfrich, M. R., Mangeney-Slavin, L. K., Long, M. S., Djoko, K. Y., & Keating, C. D. (2002). Aqueous phase separation in giant vesicles. Journal of the American Chemical Society, 124(45), 13374-13375. https://doi.org/10.1021/ja028157+
Helfrich, Marcus R. ; Mangeney-Slavin, Lauren K. ; Long, M. Scott ; Djoko, Karrera Y. ; Keating, Christine Dolan. / Aqueous phase separation in giant vesicles. In: Journal of the American Chemical Society. 2002 ; Vol. 124, No. 45. pp. 13374-13375.
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Helfrich, MR, Mangeney-Slavin, LK, Long, MS, Djoko, KY & Keating, CD 2002, 'Aqueous phase separation in giant vesicles', Journal of the American Chemical Society, vol. 124, no. 45, pp. 13374-13375. https://doi.org/10.1021/ja028157+

Aqueous phase separation in giant vesicles. / Helfrich, Marcus R.; Mangeney-Slavin, Lauren K.; Long, M. Scott; Djoko, Karrera Y.; Keating, Christine Dolan.

In: Journal of the American Chemical Society, Vol. 124, No. 45, 13.11.2002, p. 13374-13375.

Research output: Contribution to journalArticle

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Helfrich MR, Mangeney-Slavin LK, Long MS, Djoko KY, Keating CD. Aqueous phase separation in giant vesicles. Journal of the American Chemical Society. 2002 Nov 13;124(45):13374-13375. https://doi.org/10.1021/ja028157+