Low-frequency critical dynamics in (CnH2n+1NH3)2SnCl6 model biomembrane systems

Kyu Won Lee; Cheol Eui Lee; J. Y. Choi; Joon Kim

doi:10.1016/j.cap.2005.06.010

Low-frequency critical dynamics in (C_nH_2n+1NH₃)₂SnCl₆ model biomembrane systems

Kyu Won Lee, Cheol Eui Lee, J. Y. Choi, Joon Kim

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

3 Citations (Scopus)

Abstract

Nuclear magnetic resonance has been employed as a probe for the collective hydrocarbon chain dynamics in the organic-inorganic model biomembranes (C_nH_2n+1NH₃)₂SnCl₆, undergoing order-disorder and conformational phase transitions. No anomalies were observed in the laboratory-frame spin-lattice relaxation measurements at the order-disorder phase transitions, whereas a discontinuity was manifest at the conformational phase transitions characteristic of a first-order phase transition. On the other hand, our rotating frame spin-lattice relaxation measurements revealed a low-frequency critical collective chain dynamics in the kilohertz regime associated with the order-disorder phase transition.

Original language	English
Pages (from-to)	31-33
Number of pages	3
Journal	Current Applied Physics
Volume	7
Issue number	1
DOIs	https://doi.org/10.1016/j.cap.2005.06.010
Publication status	Published - 2007 Jan

Keywords

Critical dynamics model biomembranes
Nuclear magnetic resonance
Phase transition

ASJC Scopus subject areas

Materials Science(all)
Physics and Astronomy(all)

Access to Document

10.1016/j.cap.2005.06.010

Cite this

@article{3e025b23af6847ef80993da3d2d7b2c2,

title = "Low-frequency critical dynamics in (CnH2n+1NH3)2SnCl6 model biomembrane systems",

abstract = "Nuclear magnetic resonance has been employed as a probe for the collective hydrocarbon chain dynamics in the organic-inorganic model biomembranes (CnH2n+1NH3)2SnCl6, undergoing order-disorder and conformational phase transitions. No anomalies were observed in the laboratory-frame spin-lattice relaxation measurements at the order-disorder phase transitions, whereas a discontinuity was manifest at the conformational phase transitions characteristic of a first-order phase transition. On the other hand, our rotating frame spin-lattice relaxation measurements revealed a low-frequency critical collective chain dynamics in the kilohertz regime associated with the order-disorder phase transition.",

keywords = "Critical dynamics model biomembranes, Nuclear magnetic resonance, Phase transition",

author = "Lee, {Kyu Won} and Lee, {Cheol Eui} and Choi, {J. Y.} and Joon Kim",

note = "Funding Information: This work was supported by the Korea Science and Engineering foundation (RO1-2005-000-10798-0 and Proton Accelerator User Program No. M202AK010021-04A1101-02110) and by the Korea Research Foundation (Grant No. KRF-2004-005-C00060 and Brain Korea 21 Project in 2005). We thank Dr. H.-J. Woo at the KIGAM for the proton-beam irradiation. Measurements at the Korean Basic Science Institute (KBSI) are acknowledged. The authors also gratefully acknowledge Korea University{\textquoteright}s support for the Korea University{\textquoteright}s 100th Anniversary Symposium on the State of the Art and the Prospect of the Interdisciplinary Nano Sciences.",

year = "2007",

month = jan,

doi = "10.1016/j.cap.2005.06.010",

language = "English",

volume = "7",

pages = "31--33",

journal = "Current Applied Physics",

issn = "1567-1739",

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T1 - Low-frequency critical dynamics in (CnH2n+1NH3)2SnCl6 model biomembrane systems

AU - Lee, Kyu Won

AU - Lee, Cheol Eui

AU - Choi, J. Y.

AU - Kim, Joon

N1 - Funding Information: This work was supported by the Korea Science and Engineering foundation (RO1-2005-000-10798-0 and Proton Accelerator User Program No. M202AK010021-04A1101-02110) and by the Korea Research Foundation (Grant No. KRF-2004-005-C00060 and Brain Korea 21 Project in 2005). We thank Dr. H.-J. Woo at the KIGAM for the proton-beam irradiation. Measurements at the Korean Basic Science Institute (KBSI) are acknowledged. The authors also gratefully acknowledge Korea University’s support for the Korea University’s 100th Anniversary Symposium on the State of the Art and the Prospect of the Interdisciplinary Nano Sciences.

PY - 2007/1

Y1 - 2007/1

N2 - Nuclear magnetic resonance has been employed as a probe for the collective hydrocarbon chain dynamics in the organic-inorganic model biomembranes (CnH2n+1NH3)2SnCl6, undergoing order-disorder and conformational phase transitions. No anomalies were observed in the laboratory-frame spin-lattice relaxation measurements at the order-disorder phase transitions, whereas a discontinuity was manifest at the conformational phase transitions characteristic of a first-order phase transition. On the other hand, our rotating frame spin-lattice relaxation measurements revealed a low-frequency critical collective chain dynamics in the kilohertz regime associated with the order-disorder phase transition.

AB - Nuclear magnetic resonance has been employed as a probe for the collective hydrocarbon chain dynamics in the organic-inorganic model biomembranes (CnH2n+1NH3)2SnCl6, undergoing order-disorder and conformational phase transitions. No anomalies were observed in the laboratory-frame spin-lattice relaxation measurements at the order-disorder phase transitions, whereas a discontinuity was manifest at the conformational phase transitions characteristic of a first-order phase transition. On the other hand, our rotating frame spin-lattice relaxation measurements revealed a low-frequency critical collective chain dynamics in the kilohertz regime associated with the order-disorder phase transition.

KW - Critical dynamics model biomembranes

KW - Nuclear magnetic resonance

KW - Phase transition

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