Critical micelle concentration 21 crown

Critical micelle concentration (Section 19 5) Concentration above which substances such as salts of fatty acids aggre gate to form micelles in aqueous solution Crown ether (Section 16 4) A cyclic polyether that via lon-dipole attractive forces forms stable complexes with metal 10ns Such complexes along with their accompany mg anion are soluble in nonpolar solvents C terminus (Section 27 7) The amino acid at the end of a pep tide or protein chain that has its carboxyl group intact—that IS in which the carboxyl group is not part of a peptide bond Cumulated diene (Section 10 5) Diene of the type C=C=C in which a single carbon atom participates in double bonds with two others... 

Critical Micelle Concentrations.—Lipophilic crown-ether derivatives promise many interesting applications. Surface-tension measurements on the annelides (la), (lb), and (2) demonstrate that micelles are formed in dilute aqueous solution no protonation of (la) occurs in neutral solution above the c.m.c. In the latter two cases the metal ion is completely bound to the macrocycle and evaluation of the tensiometric data demonstrates that the surface area of annelides increases on metal-ion complexation. The optically active surfactant (3) exhibits increased circular dichroism above its c.m.c., and the c.m.c. of racemic (4) is higher than that of its pure enantiomers. ... 

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