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Reversible phase transition from vesicles to lamellar network structures triggered by chain melting
Shen, YW; Hao, JC; Hoffmann, H; Wu, ZH; Wu ZH(吴忠华)
2008
发表期刊SOFT MATTER
卷号4期号:4页码:805-810
通讯作者[Shen, Yuwen ; Hao, Jingcheng] Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China ; [Hoffmann, Heinz] Univ Bayreuth, Bayreuther Zentrum Kolloide & Grenzflachen, D-954446 Bayreuth, Germany ; [Wu, Zhonghua] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
摘要Reversible phase structural transition from densely packed multilamellar vesicles of cationic and anionic (catanionic) tetradecyltrimethylammonium laurate (TTAL) with an amount of salt (NaBr) to network structures was triggered by chain melting. Phase behavior of catanionic TTAL multilamellar vesicles in aqueous solutions at different concentrations of NaBr with increasing temperature was studied. This phase structural transition is a progressive process and happens at the chain melting, which was monitored by means of Fourier transform infrared (FT-IR) spectroscopy, turbidity and viscosity measurements. Transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS) were used to demonstrate the phase structural conversion from vesicles to three-dimensional structures consisting of extended bilayer networks. We found that the phase transition temperature (T-m) was influenced by adding amount of salt but not by being diluted. This is the first time that the phase conversion from catanionic surfactant vesicles to bilayer networks triggered by chain melting has been observed. The phase structural transition should arise from the enhanced membrane elasticity accompanying the catanionic surfactant state fluctuations on chain melting and the solvent-associated interactions including cationic and anionic surfactant electrostatic interaction, which favors a change in membrane curvature. We hope this phase conversion observed in catanionic surfactants in aqueous solution will provide good insight into the nature of the fusion or fission processes and the fluctuation of catanionic vesicular systems.
学科领域Chemistry; Materials Science; Physics; Polymer Science
研究领域[WOS]Chemistry ; Materials Science ; Physics ; Polymer Science ; Chemistry ; Materials Science ; Physics ; Polymer Science
DOI10.1039/b717097a
URL查看原文
语种英语
研究领域[WOS]Chemistry ; Materials Science ; Physics ; Polymer Science ; Chemistry ; Materials Science ; Physics ; Polymer Science
WOS类目Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Multidisciplinary ; Polymer Science
WOS记录号WOS:000254386800021
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被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238526
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Shen, YW,Hao, JC,Hoffmann, H,et al. Reversible phase transition from vesicles to lamellar network structures triggered by chain melting[J]. SOFT MATTER,2008,4(4):805-810.
APA Shen, YW,Hao, JC,Hoffmann, H,Wu, ZH,&吴忠华.(2008).Reversible phase transition from vesicles to lamellar network structures triggered by chain melting.SOFT MATTER,4(4),805-810.
MLA Shen, YW,et al."Reversible phase transition from vesicles to lamellar network structures triggered by chain melting".SOFT MATTER 4.4(2008):805-810.
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