Interplay between Phase Transition of DPPC Bilayer and Photoisomerization of Doped Stilbene Molecules

被引：7

作者：

Nakazawa, Koyomi ^{[1
]}

Hishida, Mafumi ^{[1
]}

Nagatomo, Shigenori ^{[1
]}

Yamamura, Yasuhisa ^{[1
]}

Saito, Kazuya ^{[1
]}

机构：

[1] Univ Tsukuba, Fac Pure & Appl Sci, Dept Chem, Tsukuba, Ibaraki 3058571, Japan

来源：

CHEMISTRY LETTERS | 2014年 / 43卷 / 08期

关键词：

SOLUBILIZATION SITES; LIPID-BILAYERS; NORMAL-ALKANES; FLUORESCENCE; ORGANIZATION; CHOLESTEROL; DYNAMICS; ISOMERIZATION; SPECTROSCOPY; MECHANISM;

D O I：

10.1246/cl.140398

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

1,2-Dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) bilayer with stilbene was investigated by using phase-contrast and fluorescence microscopy, differential scanning calorimetry, and Fourier transform infrared and UV-visible absorption spectroscopy. The results indicate that the temperature of the gel liquid-crystalline phase transition of the DPPC bilayer with cis-stilbene is much lower than that with trans isomer. Photo-irradiation to trans-stilbene in the DPPC bilayer suppresses the pretransition (L-beta' to P-beta'), while the gel-liquid-crystalline phase transition (P-beta' to L-alpha) changes little because of the poor photoisomerization rate in both gel and liquid-crystalline phases. It is shown that the photoisomerization of incorporated stilbene and the phase behavior of the lipid bilayer depend on each other.

引用

页码：1352 / 1354

页数：3

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