Department of Chemistry, University of Calcutta, Kolkata, West Bengal, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 May;78(5):1525-34. doi: 10.1016/j.saa.2011.01.044. Epub 2011 Feb 15.
In this report we have studied micellization process of anionic, cationic and non-ionic surfactants using N,N-dimethylaminonapthyl-(acrylo)-nitrile (DMANAN) as an external fluorescence probe. Micropolarity, microviscosity, critical micellar concentration of these micelles based on steady state absorption and fluorescence and time resolved emission spectroscopy of the probe DMANAN show that the molecule resides in the micelle-water interface for ionic micelles and in the core for the non-ionic micelle. The effect of variation of pH of the micellar solution as well as fluorescence quenching measurements of DMANAN provide further support for the location of the probe in the micelles.
在本报告中，我们使用 N,N-二甲基氨基萘基-(丙烯腈)-腈（DMANAN）作为外部荧光探针研究了阴离子、阳离子和非离子表面活性剂的胶束化过程。基于探针 DMANAN 的稳态吸收和荧光以及时间分辨荧光发射光谱研究了这些胶束的微极性、微粘度和临界胶束浓度，结果表明离子胶束中分子位于胶束-水界面，而非离子胶束中分子位于胶束核。胶束溶液 pH 值变化的影响以及 DMANAN 的荧光猝灭测量进一步支持了探针在胶束中的位置。
