共 9 条
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
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.
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页码:1352 / 1354
页数:3
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