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Shen, YW; Ou-Yang, ZC; Zhang, YF; Hao, JC; Liu, ZH; Hao, JC (reprint author), Shandong Univ, Key Lab Colloid & Interface Chem, Minist Jinan, Jinan 250100, Peoples R China.
Controlling the Morphology of Membranes by Excess Surface Charge in Cat-Anionic Fluorinated Surfactant Mixtures
Source PublicationLANGMUIR
Language英语
KeywordPhase-behavior Fluorocarbon Surfactants Cationic Surfactants Systems Hydrocarbon Aggregation Amphiphiles Monolayers Nanodiscs Molecules
AbstractThe 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.
2014
ISSN0743-7463
Volume30Issue:10Pages:2632-2638
Subject AreaPhysics
DOI10.1021/la403279c
Indexed BySCI
Funding OrganizationNational 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) ; 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) ; 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) ; 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)
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15806
Collection理论物理所科研产出_SCI论文
Corresponding AuthorHao, JC (reprint author), Shandong Univ, Key Lab Colloid & Interface Chem, Minist Jinan, Jinan 250100, Peoples R China.
Recommended Citation
GB/T 7714
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.
APA Shen, YW,Ou-Yang, ZC,Zhang, YF,Hao, JC,Liu, ZH,&Hao, JC .(2014).Controlling the Morphology of Membranes by Excess Surface Charge in Cat-Anionic Fluorinated Surfactant Mixtures.LANGMUIR,30(10),2632-2638.
MLA Shen, YW,et al."Controlling the Morphology of Membranes by Excess Surface Charge in Cat-Anionic Fluorinated Surfactant Mixtures".LANGMUIR 30.10(2014):2632-2638.
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