Centre de Recherche et des Technologies des Eaux (CERTE), BP 273, Soliman 8020, Tunisia.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Sep;79(5):1528-31. doi: 10.1016/j.saa.2011.05.011. Epub 2011 May 18.
Interactions of anionic dye Eriochrome Blue Black R (EBBR) with various cationic micelles of surfactants n-alkyltrimethylammonium CnTAB (n=12; 14; 16 and 18) have been investigated spectrophotometrically at 25°C in premicellar and postmicellar region. The results have shown that with increasing the alkyl chain length of surfactants, the maximum absorbance of EBBR shifted to a higher wavelength and the binding constants of EBBR to cationic micelles (Kb) increases. This confirms that the surfactant micelle, which has a longer alkyl hydrocarbon chain, enables greater solubilization of dye. Thus, the hydrophobic interaction of the dye with micelles increases in the order: C12TAB<C14TAB<C16TAB<C18TAB.
在 25°C 下，于胶束前区和胶束后区，通过分光光度法研究了阴离子染料 Eriochrome Blue Black R（EBBR）与不同阳离子表面活性剂 n- 烷基三甲基铵 CnTAB（n=12；14；16 和 18）的各种阳离子胶束之间的相互作用。结果表明，随着表面活性剂烷基链长的增加，EBBR 的最大吸收波长向更高波长移动，EBBR 与阳离子胶束的结合常数（Kb）增加。这证实了具有更长烷基碳氢链的表面活性剂胶束能够更大程度地溶解染料。因此，染料与胶束之间的疏水相互作用按以下顺序增加：C12TAB<C14TAB<C16TAB<C18TAB。
