The Surfactant Molecular Complex Formation(III): Systems of Anionic Surfactants and Various Phenols and Some Other Materials

Studies on the Interaction of Surfactants with Cationic Dye by Absorption Spectroscopy

“…Lueck et al, in a recent paper (22) based on the semiemperical molecular orbital calculation, claim that the shoulder in methyl violet is due to symmetry-lowering solvent interactions which give rise to two visible electronic transitions for the monomer. The optical properties of aqueous solutions of various dyes have drawn the attention of chemists for quite some time (23)(24)(25)(26)(27)(28)(29)(30). The present communication deals with the interaction of methyl violet with surfactants in both submicellar and micellar concentrations with and without NaNO 3 , a strong electrolyte.…”

Light and Oxygen Protective Properties of Materials Induced by Surfactant Molecular Complex Formation

“…The surfactant molecular complexes were obtained by the common method which appeared in the above-cited reports (1)(2)(3). One should refer to them for details.…”

“…Ionic surfactants form crystalline molecular complexes irrespective of their ionic nature (1)(2)(3). The authors have so far proved the stable occurrence of these complexes firmly on the basis of X-ray crystallography (4), and now have established that the complexes are categorized in a group of novel substances which have simultaneous characteristics of novel surfactants, showing cmc's and the Krafft points different from those of their mother species (5,6).…”

“…These crystalline surfactant molecular complexes (SMCs) are always produced from conventionally treated solubilized solution systems after attainment of solubilization equilibrium when the systems are allowed to stand under cool conditions (1)(2)(3). These solubilized solution systems are always accompanied by remarkable viscoelasticity.…”

Crystallisation of sodium dodecyl sulfate and the corresponding effect of 1-dodecanol addition

“…Earlier studies have focused on the structural effects that short chain alcohols and phenols have on SDS complexes. These investigations used small angle neutron scattering (SANS), XRD and pulsed field nuclear magnetic resonance (NMR) [22,23]. In a separate study, the thermodynamic properties of SDS solutions mixed with various short chain alcohols were used to support the hypothesis of a hydrogen bonding interaction between the two components [24].…”