胆固醇(Cholesterol)嵌入卵磷脂(PC)有序体后对其中CaCO_3晶型结构的影响

Influence of Cholesterol on Molecular Ordered Assemble Systems of PC/Cholesterol and Crystal Type of CaCO_3

在PC和Chol/PC有序体中进行CaCO3 沉淀反应 ,用X射线衍射和扫描电镜方法表征了反应物结构 ,研究了作为有机模板剂的不同分子有序体对CaCO3 的晶型和形态的指导作用 .在反胶束合成中出纳米级CaCO3 颗粒 .胆固醇对有序体有显著影响 ,进而影响此体系中形成的CaCO3 晶型 ,可诱导生成 3种CaCO3异构体 :胶体CaCO3、球霰石和方解石 .方解石含量随胆固醇含量增加减少 .

The CaCO_3 were obtained by chemical reaction in different molecular ordered assemble systems of PC/Cholesterol. X-ray diffraction analyses showed that there are three types of CaCO_3 in these systems: colloid CaCO_3, vaterite, calcite. The cholesterol not only influences the structure of ordered system, but also influences powerfully crystal type of reaction product in these systems.The calcite decreased with the increase of concentration of cholesterol. SEM analyses showed that CaCO_3 nanoparticles can be synthesized in PC/ether reverse micell.