Variation of alkymethylviologen radical cation-water interactions in micelles and vesicles from ESEM spectroscopy: effect of alkyl chain length
Variation of alkymethylviologen radical cation-water interactions in micelles and vesicles from ESEM spectroscopy: effect of alkyl chain length
复制标题
ESEM 光谱中胶束和囊泡中烷基甲基紫精自由基阳离子-水相互作用的变化：烷基链长度的影响
DOI：
10.1021/j100299a028
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
J. K. Hurst
中科院分区：
文献类型：
--
作者：
M. Colaneri;L. Kevan;D. Thompson;J. K. Hurst
用电子自旋回波调制光谱研究了冷冻十二烷基硫酸钠（SDS）胶束和磷酸双十六烷基酯（DHP）囊泡中烷基甲基紫精自由基阳离子-水相互作用随烷基链长的变化.在DHP囊泡系统中，测得的氘调制深度与氘化水表明，这些相互作用的幅度显着降低，在烷基链长度的紫精的增加。然而，在SDS胶束系统中不存在类似的趋势。此外，在SDS胶束中的二甲基紫精自由基阳离子-水的相互作用的强度是弱得多，比那些测得的任何紫精自由基的囊泡系统。这些观察结果被认为是在定性协议与目前提出的模型的结合特性的alkylmethylviologens DHP囊泡和SDS胶束，也可能反映这两种类型的组件之间的结构差异。
The variation in alkylmethylviologen radical cation-water interactions with the alkyl chain length in frozen sodium dodecyl sulfate (SDS) micelles and dihexadecyl phosphate (DHP) vesicles were investigated by electron spin echo modulation spectroscopy. In the DHP vesicle system, the measured deuterium modulation depth associated with deuteriated water indicated a significant decrease in the magnitude of these interactions with an increase in the alkyl chainlength of the viologen. However, a comparable trend was absent in the SDS micelle system. In addition, the strength of the dimethylviologen radical cation-water interactions in SDS micelles was much weaker than those measured for any of the viologen radicals in the vesicle system. These observations were found to be in qualitative agreement with currently proposed models of the binding characteristics of alkylmethylviologens to DHP vesicles and SDS micelles and may also reflect structural differences between these two types of assemblies.