Dynamic Behaviors of Molecular Assemblies at Liquid/Liquid Interfaces Studied by Time-Resolved Quasi-Elastic Laser Scattering Spectroscopy

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  • YUI Hiroharu
    CREST, Japan Science and Technology Agency (JST), Nanoarchitectonics Research Center (NARC), National Institute of Advanced Industrial Science and Technology (AIST) Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo
  • IKEZOE Yasuhiro
    Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo
  • SAWADA Tsuguo
    CREST, Japan Science and Technology Agency (JST), Nanoarchitectonics Research Center (NARC), National Institute of Advanced Industrial Science and Technology (AIST) Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo

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抄録

The dynamic behaviors of molecular assemblies at two immiscible liquid interfaces are intriguing topics in many fields of science and technology. However, it is generally difficult to investigate the dynamic behaviors of such molecular assemblies because of the buried nature of liquid/liquid interfaces. In the present paper, our recent investigations on dynamic behaviors of various molecular self-assemblies at liquid/liquid interfaces are reviewed. We monitored dynamic behaviors of the molecular assemblies by time-resolved quasi-elastic laser scattering (TR-QELS) and fluorescent spectroscopy. The former method allows us to monitor the change in interfacial tension with millisecond time-resolution. As molecular assemblies, bis(2-ethylhexyl)sulfosuccinate (AOT) microemulsion, phospholipid biomembrane models, and liposome-DNA complexes have all been studied, since they are relevant in material sciences and biological technologies. At liquid/liquid interfaces, these molecular assemblies showed characteristic behaviors. We review the finding of rebound response of the interfacial tension at the liquid/liquid interface induced by the adsorption of the AOT microemulsion. We monitored the hydrolysis reaction of phospholipid biomembrane models formed at oil/water interfaces, observing the different types of behavior of liposome-DNA complexes at biomembrane models with different kinds of phospholipids.

収録刊行物

  • Analytical Sciences

    Analytical Sciences 20 (11), 1501-1507, 2004

    社団法人 日本分析化学会

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