Mixed micelles formed in a ternary-solute aqueous solution of NaOH, iron (III)-ethylenediamine-N, N, N′, N′-tetraacetic acid complex (Fe-EDTA) and 1,2-diheptanoyl-sn-glycero-3-phosphatidyl choline (DHPC) were studied and compared with the mixed adsorbed film reported in Part I of this series to clarify the effect of the curvature of molecular assemblies on the interactions between their Fe-EDTA and DHPC constituents. The critical micelle concentrations (CMCs), surface tension at the CMC, and solution pH were measured as functions of the mole fractions of NaOH and DHPC. Rigorous thermodynamic equations were derived, in which the overall proton dissociation equilibria of Fe-EDTA and DHPC were taken into consideration, and applied to experimental data to obtain phase diagrams of micelle formation and the micelle-adsorbed film equilibrium. It was found that when the bulk solution was strongly acidic, Fe-EDTA was incorporated in the micelles. However, the adsorbed film was more Fe-EDTA-enriched than the micelle. These findings imply that a flat cell membrane is more permeable to an iron complex than a cell membrane with positive curvature.

在NaOH，铁（III）-乙二胺-N，N，N '，N'-四乙酸络合物（Fe-EDTA）和1,2-二庚酰基-sn的三元溶质水溶液中形成的混合胶束对-甘油-3-磷脂酰胆碱（DHPC）进行了研究，并与本系列第一部分报道的混合吸附膜进行了比较，以阐明分子组装的曲率对其Fe-EDTA与DHPC成分之间相互作用的影响。临界胶束浓度（CMCs），CMC处的表面张力和溶液pH作为NaOH和DHPC摩尔分数的函数进行测量。推导了严格的热力学方程，其中考虑了Fe-EDTA和DHPC的整体质子离解平衡，并将其应用于实验数据以获得胶束形成和胶束吸附膜平衡的相图。发现当本体溶液为强酸性时，Fe-EDTA被掺入胶束中。但是，被吸附的膜比胶束更富Fe-EDTA。