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

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

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)31-33
Number of pages3
JournalCurrent Applied Physics
Issue number1
Publication statusPublished - 2007 Jan

Bibliographical 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’s support for the Korea University’s 100th Anniversary Symposium on the State of the Art and the Prospect of the Interdisciplinary Nano Sciences.


  • Critical dynamics model biomembranes
  • Nuclear magnetic resonance
  • Phase transition

ASJC Scopus subject areas

  • General Materials Science
  • General Physics and Astronomy


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