Determination of Critical Micellar Concentration of Homologous 2-Alkoxyphenylcarbamoyloxyethyl-Morpholinium Chlorides
作者:Lenka Stopková、Jana Gališinová、Zuzana Šuchtová、Jozef Čižmárik、Fils Andriamainty
DOI:10.3390/molecules23051064
日期:——
The critical micellar concentrations of selected alkyloxy homologues of local anesthetic 4-(2-[(2-alkoxyphenyl)carbamoyl]oxy}ethyl)morpholin-4-ium chloride with nc = 2, 4, 5, 6, 7, 8, and 9 carbons in alkyloxy tail were determined by absorption spectroscopy in the UV–vis spectral region with the use of a pyrene probe. Within the homologous series of the studied amphiphilic compounds, the ln(cmc) was
局部麻醉剂 4-(2-[(2-alkoxyphenyl)carbamoyl]oxy}ethyl)morpholin-4-ium 氯化物的选定烷氧基同系物的临界胶束浓度,nc = 2, 4, 5, 6, 7, 8,烷氧基尾中的 9 个碳原子是通过使用芘探针在紫外-可见光谱区的吸收光谱测定的。在研究的两亲化合物的同源系列中,观察到 ln(cmc) 与疏水尾中的碳原子数 nc 线性相关:ln(cmc) = 0.705–0.966 nc。发现在 25 °C 和 pH ≈ 4.5–5.0 的温度下,烷氧基链的亚甲基从水相转移到胶束内部所必需的吉布斯自由能为 -2.39 kJ/摩尔。