Equilibrium micellar properties. (A Nuclear Magnetic Resonance Investigation of the Micellar Properties of Two-Headed Surfactant Systems: The disodium 4-alkyl-3-sulfonateosuccinates, part 1)
Article Abstract:
The disodium 4-alkyl-3-sulfonatosuccinates, a family of 2-headed surfactants, has been synthesized by the addition of sodium bisulfite to the corresponding monoester and the monoesterification of maleic anhydride. The micelles formed by these compounds in aqueous solution and the conformations of the chains that make up the micellar interior have been studied using 1-D NMR and homonuclear and heteronuclear 2-D NMR. Critical micelle concentrations (cmc's) and aggregation numbers found by using NMR show that the amphiphiles have low aggregation numbers and high cmc's vs single-headed surfactants of similar chain length.
Publication Name: Canadian Journal of Chemistry
Subject: Chemistry
ISSN: 0008-4042
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Synthesis, spectroscopic characterization, and structural studies of organogermanium tri- and monothiocarbonates. Crystal structures of Me2Ge(S2CSEt)2, Ph3Ge(SCO2Me), Ph3Ge(SCO2(i-Pr)), and Ph2Ge(SCO2Me)2
Article Abstract:
Synthesis and structural studies of organogermanium tri- and monothiocarbonates have been carried out. The compounds have been studied spectroscopically. Crystal structures of Ph2Ge(SCO2Me)2, Me2Ge(S2CSEt)2, Ph3Ge(SCO2Me), and Ph3Ge(SCO2(i-Pr)) have been determined. Close to Ge the environment is tetrahedral, but the thiocarbonate groups have novel structures.
Publication Name: Canadian Journal of Chemistry
Subject: Chemistry
ISSN: 0008-4042
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Cyclodextrin rotaxanes and polyrotaxanes. Ultrafast vibrational population dynamics of water and related systems: a theoretical perspective
- Abstracts: Enantiomerically pure cyclopentadienes. Synthetic approaches to enantiomerically pure 8-azabicyclo[3.2.1]octane derivatives
- Abstracts: Preparation and spectroscopic investigations of mixed octahedral complexes and clusters. part 2 Homogenous-phase electron-transfer reactions of polyoxometalates
- Abstracts: Structural basis of biological nitrogen fixation. Nucleic acid recognition by metal complexes of bleomycin. Transferrin as a metal ion mediator
- Abstracts: Spectroelectrochemical study of the nucleophilic substitution of diacyl disulfides by 2-nitrophenyl thiolate ions in N,N,-dimethylacetamide