Towards the determination of partition coefficients of cosurfactants at surfactant bilayer interfaces by muon spin resonance spectroscopy
Towards the determination of partition coefficients of cosurfactants at surfactant bilayer interfaces by muon spin resonance spectroscopy
复制标题
通过μ子自旋共振光谱法测定表面活性剂双层界面上助表面活性剂的分配系数
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
E. Roduner
中科院分区：
文献类型：
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作者：
R. Scheuermann;I. Tucker;A. Creeth;H. Dilger;Bettina Beck;E. Roduner
用避免能级交叉的介子自旋共振(ALC-μ-SR)研究了由两亲共表面活性剂2-苯乙醇衍生的突变型环己二烯自由基，得到了共表面活性剂的分配和分散在集中层状分散相中的局部环境信息。在表面活性剂浓度较高的情况下，研究双层/水界面的分配在技术上是困难的，因此很少受到关注。校准基本共振位置的工作范围有助于直接确定共表面活性剂相对于油/水环境的分配。额外的共振产生了关于局部环境的其他信息，如双层界面的有序度，从而呈现了示踪剂分子的局部环境的自洽图景。
Avoided level crossing muon spin resonance (ALC-μSR) studies on the muonated cyclohexadienyl radical derived from the amphiphilic cosurfactant 2-phenylethanol have been used to derive cosurfactant partitioning and local environment information when dispersed in a concentrated lamellar phase dispersion. The study of partitioning at the bilayer/water interface at high surfactant concentrations is technically difficult and has consequently received very little attention. Calibration of the working range of fundamental resonance positions facilitates direct determination of cosurfactant partitioning with respect to the oil/water environment. Additional resonances yield other information about the local environment such as the degree of ordering at bilayer interfaces, thereby presenting a self-consistent picture of the local environment of the tracer molecule.