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Synthesis and Electro-Optical Properties of a Novel DNA-Lipid Complex Carrying Carbazole Moieties
被引:4
|作者:
Qu, Jinqing
[1
]
Liu, Lujing
[1
]
Chen, Huanqin
[1
]
Ogata, Naoya
Masuda, Toshio
[2
]
机构:
[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China
[2] Fukui Univ Technol, Dept Environm & Biol Chem, Fac Engn, Fukui 9108505, Japan
基金:
中国国家自然科学基金;
关键词:
carbazole;
DNA-lipid complex;
electro-optical properties;
LIQUID-CRYSTALLINE DNA;
ALIGNED CAST FILM;
TRIPHENYLAMINE MOIETIES;
HELICAL POLYACETYLENES;
LIPOSOME COMPLEXES;
MESOPHASE TRANSITION;
CATIONIC LIPIDS;
GENE DELIVERY;
POLYMERS;
METATHESIS;
D O I:
10.1002/macp.200900397
中图分类号:
O63 [高分子化学(高聚物)];
学科分类号:
070305 ;
080501 ;
081704 ;
摘要:
A novel DNA-lipid complex carrying carbazole (Cz) moieties was prepared by substituting the sodium counter cation with cationic lipid, namely lipid(2Cz), in which the actual mole ratio of phosphate to lipid was 1:1.05. The DNA-lipid(2Cz) complex was soluble in common organic solvents including CHCl3, CH2Cl2, methanol, and ethanol, while insoluble in THF, toluene, and water. CD spectroscopy revealed that the DNA-lipid complex took a predominantly double helical structure in methanol and that the helical structure was fairly stable against heating. A solution of the DNA-lipid(2Cz) complex emitted fluorescence in 40.0% quantum yield, which was lower than that of the corresponding lipid(2Cz) (76%). The cyclic voltammograms of the complex indicated that the oxidation potential of DNA-lipid(2Cz) was 0.65 V. The onset temperature of weight loss of the DNA-lipid complex is 230 degrees C according to TGA in air.
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页码:345 / 352
页数:8
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