Web of Science: 43 cites, Scopus: 44 cites, Google Scholar: cites
NMR elastometry of fluid membranes in the mesoscopic regime
Martínez, Gary V. (University of Arizona. Department of Chemistry)
Dykstra, Emily M. (University of Arizona. Department of Chemistry)
Lope Piedrafita, Silvia (University of Arizona. Department of Physics)
Job, Constantin (University of Arizona. Department of Chemistry)
Brown, Michael F. (University of Arizona. Department of Chemistry)

Data: 2002
Resum: In solid-state 2H NMR of fluid lipid bilayers, quasielastic deformations at MHz frequencies are detected as a square-law dependence of the nuclear spin-lattice (R1Z) relaxation rates and order parameters (SCD). The signature square-law slope is found to decrease progressively with the mole fraction of cholesterol and with the acyl chain length, due to a stiffening of the membrane. The correspondence to thermal vesicle fluctuations and molecular dynamics simulations implies that a broad distribution of modes is present, ranging from the membrane size down to the molecular dimensions.
Drets: Tots els drets reservats.
Llengua: Anglès
Document: article ; recerca ; Versió publicada
Publicat a: Physical review. E : Statistical, nonlinear, and soft matter physics, Vol. 66, Number 5 (November 2002) , p. 050902/1-050902-4, ISSN 1539-3755

DOI: 10.1103/PhysRevE.66.050902

4 p, 434.6 KB

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