0000000000358913

AUTHOR

A. Vierengel

showing 2 related works from this author

Characterization of sulfobetaine monomers by nuclear magnetic resonance spectroscopy: a note

1995

A set of zwitterionic monomers bearing the 3-ammoniopropanesulfonate moiety is analysed in CDCl3, CD3OD and D2O by one- and two-dimensional H-1 n.m.r. and C-13 n.m.r. spectroscopy. Absolute and relative positions of the n.m.r, signals are determined depending on the solvent used; the refined assignments of the signals in the vicinity of the ammonium group deviate from previously proposed assignments based on standard n.m.r, shift tables. Still, there is no convincing evidence for a special ring current effect due to a six-membered ring conformation of the betaine moiety.

Acrylate polymerPolymers and PlasticsProtonChemistryStereochemistryOrganic ChemistryNuclear magnetic resonance spectroscopyRing (chemistry)chemistry.chemical_compoundCrystallographyMonomerBetaineMaterials ChemistryMoietySpectroscopyPolymer
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Structural variations in amphiphiles: Discoidal multivalent cations

1986

Fourteen cationic multipolar amphiphiles have been synthesized with pyridinium or trimethylammonium head groups. The hydrophobic cores are planar ring systems (benzene or triphenylene) to which two, three, four, or six decylene or undecylene alkyl chains are attached by ester linkages. The hydrophilic head groups are bound to the outer ends of the alkyl chains.

chemistry.chemical_classificationPolymers and PlasticsStereochemistryChemistryCationic polymerizationTriphenyleneRing (chemistry)Micellechemistry.chemical_compoundColloid and Surface ChemistryLiquid crystalPolymer chemistryAmphiphileMaterials Chemistrylipids (amino acids peptides and proteins)PyridiniumPhysical and Theoretical ChemistryAlkylColloid & Polymer Science
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