Thermodynamic equilibrium of domains in a two-component Langmuir monolayer.

Biophysical Journal
Yufang HuJacob Israelachvili

Abstract

This [corrected] article outlines the results from a combined experimental and theoretical study on the properties of circular domains in a mixed Langmuir monolayer at thermodynamic equilibrium. The mixed monolayer consisted of a binary mixture of dimyristoyl-phosphatidyl-choline and dihydrocholesterol. A long-term fluorescence microscopy study of these domains was carried out over the course of approximately 60 h. Image analysis of the domains over time revealed that the domains ripened slowly with an [corrected] increase in mean domain radius and a [corrected] decrease in domain number density. At the end of the measurement, the domains remained polydisperse, and true thermodynamic equilibrium was not reached. Theoretically, collective thermodynamic equilibrium properties such as mean domain size and size distribution were calculated by combining micelle self-assembly theory and the "equivalent dipole" model for the self-energy of two-dimensional domains. The calculations predicted existence of finite-sized circular domains at equilibrium. This suggests that equilibrium circular monolayer domains of single- or multicomponent lipids with a finite size distribution should form only at very limited experimental conditions. Both ...Continue Reading

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Citations

Oct 23, 2009·Journal of the Royal Society, Interface·Rakesh Kumar HarishchandraHans-Joachim Galla
Jun 17, 2008·The Journal of Chemical Physics·Jack F DouglasKarl F Freed
Feb 7, 2013·Chemistry and Physics of Lipids·Safia NathooElmar J Prenner
Jan 10, 2012·Chemistry and Physics of Lipids·Thomas GrögerElmar J Prenner
Feb 1, 2008·Biophysical Journal·Marcel VrânceanuGero Leneweit
Feb 18, 2015·Biochimica Et Biophysica Acta·Mark MahadeoElmar J Prenner
Jul 24, 2007·Biophysical Journal·Cinzia EspositoTobias Baumgart
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May 15, 2020·Journal of Oleo Science·Yudai YamashitaYushi Oishi
Sep 13, 2007·The Journal of Biological Chemistry·Ana J García-SáezPetra Schwille
Apr 11, 2009·The Journal of Physical Chemistry. B·Makoto AratonoTakanori Takiue
Dec 22, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Takashi OkazakiKenichi Morigaki
Jul 25, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·José AgudeloSylvio May
Jul 26, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Benjamin L StottrupJoseph A Zasadzinski
Jul 19, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Takayuki NaritaYushi Oishi

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