Association of alcohol with cationic micelles

Gamboa, Consuelo; Olea, Andrés F.; Rı́os, Hernán E.; Henriquez, M.

doi:10.1021/la00037a006

Cited by 29 publications

(13 citation statements)

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“…Similar linear free energy relationships have been found in studies of partition of solutes between aqueous phase and organic solvents, micelles, and polymer micelles [24,25,[42][43][44]. Plots of the values of Δµ t 0 against the number of carbon atoms in the alkyl group are almost linear for both polymer aggregates (Fig.…”

Section: Distribution Of P-alkylphenols Between Aqueous Phase and Polsupporting

confidence: 79%

Solubilization of phenols by multimolecular aggregates formed by low molecular weight hyperbranched polyglycidol

Olea

Acevedo

Ossandon

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Distribution Of P-alkylphenols Between Aqueous Phase and Polsupporting

confidence: 79%

Solubilization of phenols by multimolecular aggregates formed by low molecular weight hyperbranched polyglycidol

Olea

Acevedo

Ossandon

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…Similar linear free energy relationships have been found in studies of partition of solutes between aqueous phase and organic solvents, micelles, and polymer micelles [20,21,[25][26][27]. Plots of the values of Δ 0 against the number of carbon atoms in the alkyl group are almost linear for both polymer aggregates (see Figure 6).…”

Section: Partition Of Phenol and Derivatives Between Aqueous And Micesupporting

confidence: 78%

Solubilization of Phenol Derivatives in Polymer Micelles Formed by Cationic Block Copolymer

Fuentes

Silva

Martínez

et al. 2017

Journal of Nanomaterials

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The aggregation of cationic block copolymers formed by polystyrene (PS) and poly(ethyl-4-vinylpyridine) (PS-b-PE4VP) was studied in aqueous solution. Diblock copolymers of PS and poly(4-vinylpyridine) were synthesized by sequential anionic polymerization using BuLi as initiator. Subsequently, the 4-vinylpyridine units were quaternized with ethyl bromide to obtain cationic PS-b-PE4VP block copolymers with different quaternization degree. The self-aggregation of cationic block copolymers was studied by fluorescence probing, whereas the morphology and size of polymer micelles were determined by transmission electronic microscopy. Results indicate that spherical micelles with sizes lower than 100 nm were formed, whereas their micropolarity decreases with increasing quaternization degree. The partition of phenols between the micellar and aqueous phase was studied by using the pseudo-phase model, and the results show that the partition coefficients increase with increasing length of the side alkyl chain and are larger for star micelles. These results are discussed in terms of three-region model.

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“…Similar linear free energy relationships have been found in studies of partition of solutes between aqueous phase and organic solvents, micelles, and polymer micelles 24,25,[39][40][41] . In Figure 4 the values of Δµ t 0 are plotted against the number of carbon atom in the p-alkylphenol.…”

supporting

confidence: 73%

Solubilization of P-Alkylphenols in Pluronics F-68 and F-127 Micelles: Partition Coefficients and Effect of Solute on the Aggregate Structure

Olea

Carrasco

Espinoza

et al. 2014

J. Chil. Chem. Soc.

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The partition of a series of substituted phenols between water and polymer micelles formed by Pluronic F-68 and F-127 has been studied. The formation of micelles by these block copolymers has been evidenced by steady-state fluorescence and dynamic light scattering. The data show that micelles and larger aggregates are formed above the critical micelle concentration. In presence of p-alkylphenols a micelle rearrangement occurs that leads to the formation of just one and large aggregate. This effect depends both on polymer and phenols structures. The partition coefficients and the standard free energies of transfer from the aqueous to the micellar phases were determined. The incremental free energy for a methylene group are 2.88 kJ mol -1 and 1.65 kJ mol -1 for F-127 and F-68, respectively. This difference is explained in terms of the core sizes that are determined by the length of the PPO block.

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Association of alcohol with cationic micelles

Cited by 29 publications

References 0 publications

Solubilization of phenols by multimolecular aggregates formed by low molecular weight hyperbranched polyglycidol

Solubilization of phenols by multimolecular aggregates formed by low molecular weight hyperbranched polyglycidol

Solubilization of Phenol Derivatives in Polymer Micelles Formed by Cationic Block Copolymer

Solubilization of P-Alkylphenols in Pluronics F-68 and F-127 Micelles: Partition Coefficients and Effect of Solute on the Aggregate Structure

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