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Interactions between hairy rod anionic conjugated polyelectrolytes and nonionic...
Fonseca, Sofia M.; Eusébio, M. Ermelinda; Castro, Ricardo; Burrows, Hugh D.; Tapia, Maria José; Olsson, UlfThe effect of three anionic, hairy-rod fluorene based conjugated polyelectrolytes on the cloud points of the alkyloxyethylene surfactants C10E3, C12E4, C12E5, and C12E6 has been studied in aqueous solution. Although the association behaviour of these rigid polymers with surfactants is different from that of more flexible polyelectrolytes, both types of polymers are seen to increase the cloud points, probably as...
Cation Association with Sodium Dodecyl Sulfate Micelles As Seen by Lanthanide L...
Tapia, María José; Burrows, Hugh D.; Azenha, M. Emília D. G.; Miguel, M. da Graça; Pais, A. A. C. C.; Sarraguça, J. M. G.The interaction of trivalent lanthanides with sodium dodecyl sulfate micelles (SDS) in aqueous solution has been studied by a variety of experimental techniques. Potentiometric measurements with a sodium selective electrode, steady-state fluorescence spectra of Ce(III), emission lifetime measurements of Ce(III), Tb(III), and Eu(III), and electronic paramagnetic resonance spectra (EPR) of Gd(III) all show that t...
Cation Polyelectrolyte Interactions in Aqueous Sodium Poly(vinyl sulfonate) as ...
Tapia, María José; Burrow, Hugh D.The interaction between trivalent lanthanide ions and the polyelectrolyte poly(vinyl sulfonate) (PVS) has been studied in aqueous solutions by monitoring lanthanide luminescence. The existence of specific binding of cations by PVS is indicated by blue-shifts in the maximum of the emission of cerium(III), effects on the decay of terbium(III) luminescence, and a slight broadening of the gadolinium(III) electron p...
Lanthanide Ion Binding in AOT/Water/Isooctane Microemulsions
Burrows, Hugh D.; Tapia, Maria Joséhttp://dx.doi.org/10.1021/la025749x
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