Ca2+– and Ba2+–Ligand Coordinated Unilamellar, Multilamellar, and Oligovesicular Vesicles

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 固体润滑国家重点实验室

	Ca2+– and Ba2+–Ligand Coordinated Unilamellar, Multilamellar, and Oligovesicular Vesicles
	Song AX(宋爱新) ; Jia XF(贾祥凤) ; Teng MM(腾敏敏) ; Hao JC(郝京诚)
刊名	Chem. Eur. J.
	2007
卷号	13 页码:496-501
关键词	coordination modes ligands self-assembly surfactants vesicles
ISSN号	0947-6539
通讯作者	郝京诚
中文摘要	Ca2+- and Ba2+-coordinated vesicle phases were prepared in mixed aqueous solutions of tetradecyldimeth-ylamine oxide (C14DMAO) and calcium oleate (Ca(OA)2) or barium oleate (Ba(OA)2). At the right mixing ratios, metal–ligand coordination between Ca(OA)2 or Ba(OA)2 and C14DMAO results in the formation of molecular bilayers due to the reduction in area per head group. Ca2+ and Ba2+ tightly associate to the head groups of surfactants and in this system the bilayer membranes are not shielded by excess salts. The structures of the birefringent samples of the Ca(OA)2/C14DMAO/H2O and Ba(OA)2/C14DMAO/H2O systems were determined by freeze-fracture transmission electron microscopy (FF-TEM), small-angle X-ray scattering (SAXS), and rheological measurements to consist of unilamellar, multilamellar, and oligovesicular vesicles. The coordination between C14DMAO and Ba(OA)2 or Ca(OA)2 plays an important role in the formation of the vesicles, which was easily confirmed by studying the phase behavior of the KOA/C14DMAO/H2O system in which only the L1 phase forms, due to the absence of coordination between KOA and C14DMAO. A mechanism is proposed that accounts for the formation of these new metal–ligand coordinated vesicles.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the NSFC (20473049;20571048;20533050;20428101);Hundreds of Talents of the Chinese Academy of Sciences;the Specialized Research Fund for the Doctoral Program of Higher Education (20050422009);the NSF, Shandong Province (Z2004B04)
语种	英语
公开日期	2013-11-01
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/4090]
专题	兰州化学物理研究所_固体润滑国家重点实验室
推荐引用方式 GB/T 7714	Song AX,Jia XF,Teng MM,et al. Ca2+– and Ba2+–Ligand Coordinated Unilamellar, Multilamellar, and Oligovesicular Vesicles[J]. Chem. Eur. J.,2007,13:496-501.
APA	宋爱新,贾祥凤,腾敏敏,&郝京诚.(2007).Ca2+– and Ba2+–Ligand Coordinated Unilamellar, Multilamellar, and Oligovesicular Vesicles.Chem. Eur. J.,13,496-501.
MLA	宋爱新,et al."Ca2+– and Ba2+–Ligand Coordinated Unilamellar, Multilamellar, and Oligovesicular Vesicles".Chem. Eur. J. 13(2007):496-501.