Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland.
Molecules. 2022 Dec 2;27(23):8493. doi: 10.3390/molecules27238493.
The studies on the behavior of Auramine O (AuO) at the water-air interface and in the bulk phase of the aqueous solution of Kolliphor ELP (ELP) and Kolliphor RH 40 (RH40) and their mixture were based on the results obtained from the measurements of the contact angle of water, formamide and diiodomethane on the polytetrafluoroethylene covered by the AuO layer, the surface tension of the aqueous solution of AuO, AuO + ELP, AuO + RH40, AuO + ELP + RH40, density and fluorescence intensity. Based on the obtained results, it was possible to determine components and parameters of the AuO surface tension, concentration and composition of the mixed monolayer, including AuO, ELP and RH40, as well as that of the mixed micelles, and to determine the Gibbs standard free energy of adsorption, micellization and AuO solubilization. The obtained results also showed that surface tension isotherms of the studied solutions can be described by the Szyszkowski equation and the exponential function of the second order and predicted by the Fainerman and Miller equation. In addition, the mixed surface layer composition can be predicted based on the contribution of the components of this layer to the water surface tension reduction.
基于在聚四氟乙烯覆盖的金胺 O (AuO) 层上水、甲酰胺和二碘甲烷接触角、AuO 水溶液的表面张力、AuO + ELP、AuO + RH40、AuO + ELP + RH40 的测量结果以及密度和荧光强度，对 AuO 在水-气界面和水溶液本体相中的行为进行了研究。ELP 和 Kolliphor RH40 及其混合物。基于所获得的结果，可以确定 AuO 表面张力、混合单层中包括 AuO、ELP 和 RH40 的浓度和组成，以及混合胶束的组成，以及确定 Gibbs 标准吸附自由能、胶束化和 AuO 增溶。所得结果还表明，可以用 Szyszkowski 方程和二阶指数函数来描述所研究溶液的表面张力等温线，并可以用 Fainerman 和 Miller 方程进行预测。此外，可以基于该层的组分对水表面张力降低的贡献来预测混合表面层的组成。
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