Broadband dielectric spectroscopy from sub GHz to THz of hydrated lipid bilayer of DMPC

被引：5

作者：

Kadomura, Yu ^{[1
]}

Yamamoto, Naoki ^{[2
]}

Tominaga, Keisuke ^{[1
,3
]}

机构：

[1] Kobe Univ, Grad Sch Sci, Dept Chem, Nada Ku, Kobe, Hyogo 6578501, Japan

[2] Jichi Med Univ, 3311-1 Yakushiji, Shimotsuke, Tochigi 3290498, Japan

[3] Kobe Univ, Mol Photosci Res Ctr, Nada Ku, Kobe, Hyogo 6578501, Japan

来源：

EUROPEAN PHYSICAL JOURNAL E | 2019年 / 42卷 / 10期

关键词：

LOW-FREQUENCY SPECTRA; WATER; DYNAMICS; TEMPERATURE; MOBILITY;

D O I：

10.1140/epje/i2019-11901-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In order to study the dynamics of a phospholipid and its hydration water, we measured complex dielectric spectra of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) from the sub-GHz to the THz frequency region with varying the temperature and hydration level of the sample. Spectra obtained from a vector network analyzer and two terahertz time-domain spectrometers are adjusted, which enables us to analyze the dielectric spectra from the sub-GHz region to the THz region by a model function. We confirmed a fast relaxational mode in the sub-THz region, which was suggested by the previous work which only used a THz spectrometer.

引用

页数：8

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