Normal vibrational modes of phospholipid bilayers observed by low-frequency Raman scattering

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Normal vibrational modes of phospholipid bilayers observed by low-frequency Raman scattering. / Surovtsev, N. V.; Dmitriev, A. A.; Dzuba, S. A.

In: Physical Review E, Vol. 95, No. 3, 032412, 20.03.2017.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{b0e4b701a39247db99266295ebc96949,

title = "Normal vibrational modes of phospholipid bilayers observed by low-frequency Raman scattering",

abstract = "Low-frequency Raman spectra of multilamellar vesicles made either of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) or 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) have been studied in a wide temperature range. Below 0C two peaks are found at frequencies around 8-9 and 14-17cm-1 and attributed to the normal vibrational modes of the phospholipid bilayer, which are determined by the bilayer thickness and stiffness (elastic modulus). The spectral positions of the peaks depend on the temperature and the bilayer composition. It is suggested that the ratio of the intensities of the first and second peaks can serve as a measure of the interleaflet elastic coupling. The addition of cholesterol to the phospholipid bilayer leads to peak shift and broadening, which may be assigned to the composition heterogeneities commonly attributed to the lipid raft formation.",

keywords = "LIPID-BILAYERS, PHASE-TRANSITION, PHOSPHATIDYLCHOLINE BILAYERS, CHOLESTEROL, TEMPERATURE, MEMBRANES, SPECTROSCOPY, RAFTS, Temperature, Vibration, Cholesterol/chemistry, 1,2-Dipalmitoylphosphatidylcholine/chemistry, Elastic Modulus, Water/chemistry, Suspensions/chemistry, Lipid Bilayers/chemistry, Phosphatidylcholines/chemistry, Spectrum Analysis, Raman",

author = "Surovtsev, {N. V.} and Dmitriev, {A. A.} and Dzuba, {S. A.}",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = mar,

day = "20",

doi = "10.1103/PhysRevE.95.032412",

language = "English",

volume = "95",

journal = "Physical Review E",

issn = "2470-0045",

publisher = "American Physical Society",

number = "3",

}

RIS

TY - JOUR

T1 - Normal vibrational modes of phospholipid bilayers observed by low-frequency Raman scattering

AU - Surovtsev, N. V.

AU - Dmitriev, A. A.

AU - Dzuba, S. A.

PY - 2017/3/20

Y1 - 2017/3/20

N2 - Low-frequency Raman spectra of multilamellar vesicles made either of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) or 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) have been studied in a wide temperature range. Below 0C two peaks are found at frequencies around 8-9 and 14-17cm-1 and attributed to the normal vibrational modes of the phospholipid bilayer, which are determined by the bilayer thickness and stiffness (elastic modulus). The spectral positions of the peaks depend on the temperature and the bilayer composition. It is suggested that the ratio of the intensities of the first and second peaks can serve as a measure of the interleaflet elastic coupling. The addition of cholesterol to the phospholipid bilayer leads to peak shift and broadening, which may be assigned to the composition heterogeneities commonly attributed to the lipid raft formation.

AB - Low-frequency Raman spectra of multilamellar vesicles made either of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) or 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) have been studied in a wide temperature range. Below 0C two peaks are found at frequencies around 8-9 and 14-17cm-1 and attributed to the normal vibrational modes of the phospholipid bilayer, which are determined by the bilayer thickness and stiffness (elastic modulus). The spectral positions of the peaks depend on the temperature and the bilayer composition. It is suggested that the ratio of the intensities of the first and second peaks can serve as a measure of the interleaflet elastic coupling. The addition of cholesterol to the phospholipid bilayer leads to peak shift and broadening, which may be assigned to the composition heterogeneities commonly attributed to the lipid raft formation.

KW - LIPID-BILAYERS

KW - PHASE-TRANSITION

KW - PHOSPHATIDYLCHOLINE BILAYERS

KW - CHOLESTEROL

KW - TEMPERATURE

KW - MEMBRANES

KW - SPECTROSCOPY

KW - RAFTS

KW - Temperature

KW - Vibration

KW - Cholesterol/chemistry

KW - 1,2-Dipalmitoylphosphatidylcholine/chemistry

KW - Elastic Modulus

KW - Water/chemistry

KW - Suspensions/chemistry

KW - Lipid Bilayers/chemistry

KW - Phosphatidylcholines/chemistry

KW - Spectrum Analysis, Raman

UR - http://www.scopus.com/inward/record.url?scp=85015686536&partnerID=8YFLogxK

U2 - 10.1103/PhysRevE.95.032412

DO - 10.1103/PhysRevE.95.032412

M3 - Article

C2 - 28415343

AN - SCOPUS:85015686536

VL - 95

JO - Physical Review E

JF - Physical Review E

SN - 2470-0045

IS - 3

M1 - 032412

ER -

ID: 9048704