Surface tension studies on the complexation of dodecylpyridinium chloride by?-cyclodextrin in aqueous electrolyte solutions

Spectroscopic study on binding behaviors of different structural nonionic surfactants to cyclodextrins

“…A great increase in surface tension occurs although a small amount of β-CD is added. This result is consistent with the conclusion that the formation of the surfactant/β-CD complex in aqueous solution is characterized by an increase in surface tension [30][31][32]. In the presence of 1.0 × 10 −3 M OPE and TX, the surface tension maximum above 1.0 × 10 −3 M β-CD also reveals that both OPE and TX bind to β-CD and mainly form the inclusion complexes with the stoichiometry of 1:1.…”

“…As a result of the preferential binding of surfactants to CDs, surfactants will have a significant effect on the wide applications of the inclusion complexes of CDs with substrates in above areas mentioned. A few groups have studied the interaction of CD with cationic, nonionic, and anionic surfactants by conductance [20][21][22][23][24][25][26][27][28], surface tension [28][29][30][31][32], NMR [33,34], and fluorescence and phosphorescence [35][36][37][38][39][40]. In most cases, inclusion complexes with the predominant stoichiometry of 1:1 were formed in aqueous solutions and thermodynamic and kinetic parameters were determined to evaluate the complex stability of ionic surfactants with CDs.…”

Studies of Triton X-165–β-cyclodextrin interactions using both extrinsic and intrinsic fluorescence

“…There are reports of interaction of CDs with cationic and anionic surfactants by conductance, surface tension, NMR studies [18][19][20][21][22]. These studies interpret the formation of surfactant-CD complexes from various angles.…”

“…Association constants, diffusion coefficients, effect of additives, etc. have been determined in order to analyze the mode of complexation between the surfactants and CDs [18][19][20][21][22]. Also reports are available dealing with the interaction of the non-ionic surfactants with the CDs [23][24][25][26].…”

Comparison of the Binding Constant of Decanesulfonate with β-Cyclodextrin as Determined by Liquid Chromatography with a Water Mobile Phase and Flow Injection Analysis Coupled with Dynamic Surface Tension Detection

“…This change in pressure is directly proportional to a change in surface tension as related by Eq. (13).…”