电解质对带电磷脂自组装行为的影响  

Effects of Electrolytes on the Assembling Structures of Charged Lipids

作　　者：林美玉[1] 李莉[1] 邱枫[1] 杨玉良[1] 

机构地区：[1]复旦大学高分子科学系聚合物分子工程教育部重点实验室,上海200433

出　　处：《化学学报》2007年第14期1285-1288,共4页Acta Chimica Sinica

基　　金：国家自然科学基金(No.20574015);国家自然科学优秀研究群体基金;国家基础研究专项基金(No.2005CB623800)资助项目

摘　　要：运用光学显微镜研究了电解质对心磷脂聚集形态的影响.结果表明,阳离子的价态和浓度对心磷脂的聚集形态有很大影响,而离子半径及同一价态下离子种类的影响相对较小.在一定浓度范围的一价电解质溶液中,可见同中心的多层管状囊泡的生长,而且囊管的长度L与生长时间t的标度关系不因电解质种类和浓度的改变而改变.随着电解质浓度的增加,除通常的囊管结构外,还出现了单螺旋、双螺旋甚至超螺旋的结构.The effects of electrolytes on the assembling structures of cardiolipin were studied by microscopy. The results show that the assembling structures greatly depend on the concentration and valency of cations, rather than their types or ionic radii. Myelin figures, consisting of concentric cylindrical membranes, appear in the certain concentration range of univalent electrolyte. The kinds and concentration of electrolyte do not influence the scaling relationship between the myelin length L and its growing time t. Besides the normal shape of myelin figures, single, double or even super helixes were found when the electrolyte concentration increased.

关 键 词：带电膜 电解质 心磷脂 囊管 

分 类 号：O621.2[理学—有机化学]