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题名: Controlling the Morphology of Membranes by Excess Surface Charge in Cat-Anionic Fluorinated Surfactant Mixtures
作者: Shen, YW ;  Ou-Yang, ZC ;  Zhang, YF ;  Hao, JC ;  Liu, ZH
刊名: LANGMUIR
出版日期: 2014
卷号: 30, 期号:10, 页码:2632-2638
关键词: PHASE-BEHAVIOR ;  FLUOROCARBON SURFACTANTS ;  CATIONIC SURFACTANTS ;  SYSTEMS ;  HYDROCARBON ;  AGGREGATION ;  AMPHIPHILES ;  MONOLAYERS ;  NANODISCS ;  MOLECULES
学科分类: Physics
DOI: 10.1021/la403279c
通讯作者: Hao, JC (reprint author), Shandong Univ, Key Lab Colloid & Interface Chem, Minist Jinan, Jinan 250100, Peoples R China.
部门归属: [Shen, Yuwen ;  Zhang, Yufeng ;  Liu, Zhaohui] Shandong Acad Agr Sci, Inst Agr Resources & Environm, Jinan 250100, Peoples R China ;  [Shen, Yuwen ;  Hao, Jingcheng] Shandong Univ, Key Lab Colloid & Interface Chem, Minist Jinan, Jinan 250100, Peoples R China ;  [Ou-Yang, Zhong-can] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: The segregation and phase sequence of semifluorinated cat-anionic surfactant membranes at different excess surface charges was investigated by freeze-fracture transmission electron microscope (FF-TEM), X-ray diffraction (XRD), and nuclear magnetic resonance (NMR). The thermal behavior of the membranes was evaluated by conductivity, rheology, and deuterium nuclear magnetic resonance (H-2 NMR). The experimental results show that the cat-anionic fluorinated surfactant mixtures can form faceted vesicles and punctured lamellar phase when there is excess surface charge. The cationic and anionic fluorinated surfactants are stiff in the membranes, like phospholipids in the frozen "crystalline" or "gel" phase. For the system with excess, cationic surface charge, the gel-like faceted vesicles and punctured lamellae can transform into smooth-shaped vesicles at 65 C. However, for the system with no excess charge or with excess anionic surface charge, no phase transformation occurs even at 90 C. A model was established to demonstrate the mechanism of the formation and transition of the aggregates with different morphologies. The segregation-crystallization mechanism works well with other cosmotropic counterions from the Hofmeister series. The observations provide a better understanding of how to control the membrane morphology of the aqueous solutions of cat-anionic surfactant mixtures.
资助者: National Natural Science Foundation of China [31101600]; Shandong Technology Development Program [2011GNC11208]; Special Fund for Taishan Scholar Construction Engineering (Agricultural Nonpoint Source Pollution Prevention and Control)
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000333235500006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15806
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Shen, YW,Ou-Yang, ZC,Zhang, YF,et al. Controlling the Morphology of Membranes by Excess Surface Charge in Cat-Anionic Fluorinated Surfactant Mixtures[J]. LANGMUIR,2014,30(10):2632-2638.
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