Rotating-frame nuclear magnetic relaxation in a long-chain model biomembrane (C 18H 37NH 3) 2SnCl 6

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Abstract

The lattice dynamics in bis-(n-(C 18H 37NH 3) 2SnCl 6, where the hydrocarbon part is analogous to a lipid membrane, was investigated by means of 55-kHz 1H rotating-frame nuclear magnetic resonance. The critical fluctuation near the order-disorder transition of the rigid alkyl chains is attributed to the high-frequency dynamics for long-chain compounds, in contrast to the low-frequency dynamics for short-chain compounds. Besides, the non-exponential spin-lattice relaxation is ascribed to chain segmental motions, giving rise to a distribution of correlation times and freezing below 230 K.

Original languageEnglish
Pages (from-to)1084-1086
Number of pages3
JournalJournal of the Korean Physical Society
Volume47
Issue number6
Publication statusPublished - 2005 Dec 1

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magnetic relaxation
spin-lattice relaxation
freezing
lipids
hydrocarbons
disorders
membranes
low frequencies
nuclear magnetic resonance

Keywords

  • Lipid membrane
  • Low-frequency dynamics
  • NMR

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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title = "Rotating-frame nuclear magnetic relaxation in a long-chain model biomembrane (C 18H 37NH 3) 2SnCl 6",
abstract = "The lattice dynamics in bis-(n-(C 18H 37NH 3) 2SnCl 6, where the hydrocarbon part is analogous to a lipid membrane, was investigated by means of 55-kHz 1H rotating-frame nuclear magnetic resonance. The critical fluctuation near the order-disorder transition of the rigid alkyl chains is attributed to the high-frequency dynamics for long-chain compounds, in contrast to the low-frequency dynamics for short-chain compounds. Besides, the non-exponential spin-lattice relaxation is ascribed to chain segmental motions, giving rise to a distribution of correlation times and freezing below 230 K.",
keywords = "Lipid membrane, Low-frequency dynamics, NMR",
author = "Lee, {Kyu Won} and Lee, {Cheol Eui} and Choi, {Jin Young} and Joon Kim",
year = "2005",
month = "12",
day = "1",
language = "English",
volume = "47",
pages = "1084--1086",
journal = "Journal of the Korean Physical Society",
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T1 - Rotating-frame nuclear magnetic relaxation in a long-chain model biomembrane (C 18H 37NH 3) 2SnCl 6

AU - Lee, Kyu Won

AU - Lee, Cheol Eui

AU - Choi, Jin Young

AU - Kim, Joon

PY - 2005/12/1

Y1 - 2005/12/1

N2 - The lattice dynamics in bis-(n-(C 18H 37NH 3) 2SnCl 6, where the hydrocarbon part is analogous to a lipid membrane, was investigated by means of 55-kHz 1H rotating-frame nuclear magnetic resonance. The critical fluctuation near the order-disorder transition of the rigid alkyl chains is attributed to the high-frequency dynamics for long-chain compounds, in contrast to the low-frequency dynamics for short-chain compounds. Besides, the non-exponential spin-lattice relaxation is ascribed to chain segmental motions, giving rise to a distribution of correlation times and freezing below 230 K.

AB - The lattice dynamics in bis-(n-(C 18H 37NH 3) 2SnCl 6, where the hydrocarbon part is analogous to a lipid membrane, was investigated by means of 55-kHz 1H rotating-frame nuclear magnetic resonance. The critical fluctuation near the order-disorder transition of the rigid alkyl chains is attributed to the high-frequency dynamics for long-chain compounds, in contrast to the low-frequency dynamics for short-chain compounds. Besides, the non-exponential spin-lattice relaxation is ascribed to chain segmental motions, giving rise to a distribution of correlation times and freezing below 230 K.

KW - Lipid membrane

KW - Low-frequency dynamics

KW - NMR

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