Nanostructures of polyelectrolyte gel-surfactant complexes

Phase Diagrams of Stoichiometric Polyelectrolyte−Surfactant Complexes

“…[12][13][14][15][16][17] Complexes formed between flexible, highly charged polyelectrolytes and oppositely charged surfactants at stoichiometric charge ratios have been of particular experimental interest, since they often form water-insoluble complexes possessing longrange nanoscopic order. [18][19][20][21][22][23][24][25] While purely electrostatic interactions undoubtedly play a role during complexation, counterion release is believed to be the major driving force for the selfassembly process in these and other highly charged systems. [26][27][28] Prior to complexation, the polyelectrolyte and surfactant counterions are restricted to regions close to the surfaces of both the surfactant micelles and the polyelectrolyte chains, a phenomenon known as Manning condensation.…”

SAXS study on complexes formed by anionic poly(sodium methacrylate-co-N-isopropylacrylamide) gels with cationic surfactants

“…The previous SAXS results [22] of P(MAA/ NIPAM) gels±C 16 TAB complexes showed Pm3n cubic, FCC and HCP structure at different charge densities in P(MAA/NIPAM) chains of ! 75%, 67% and 50%, respectively.…”

“…However, it was rarely observed in PSCs. The detailed analyses for the Pm3n cubic structure have been described elsewhere [28]. In comparison with complexes formed by C 16 TAB with P(MAA/NIPAM) gels at the same charge density of 75±100 mol%, the SAXS results showed the same Pm3n cubic structure [23].…”

“…75%, 67% and 50%, respectively. Both FCC and HCP structures inside the P(MAA/NIPAM) gels±C 16 TAB, ± C 14 TAB complexes were formed by the close packing of spherical micelles of C 16 TA and C 14 TA cations inside the gels [20,22]. Therefore, it should be possible that both FCC and HCP structures might coexist in a complex when the charge density of P(MAA/NIPAM) gel was around 50±67%, but the two structures could be distributed inhomogeneously.…”

Multicomb Polymeric Supramolecules and Their Self‐Organization: Combination of Coordination and Ionic Interactions

“…[5,[21][22][23][24][25] The combshaped architecture is particularly feasible as the physically bound ''combs'' also plasticize the structures, leading to enhanced kinetics to promote well-developed order, which is especially useful for rigid polymers [24,25] or for polymers of high molecular weight. [26] In principle, it is also possible to tune the self-organized phases of comb-shaped supramolecules by tuning the length of the side chains, [27,28] thus gaining control of the side-chain crowding. However, this is a somewhat indirect method and the structure can be critical to several factors.…”