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
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2010年 / 211卷 / 03期
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.
引用
收藏
页码：345 / 352
页数：8
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