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Campo DC | Valor | Idioma |
---|---|---|
dc.creator | Agudelo, Álvaro Javier Patiño | - |
dc.creator | Coelho, Yara Luiza | - |
dc.creator | Ferreira, Guilherme Max Dias | - |
dc.creator | Ferreira, Gabriel Max Dias | - |
dc.creator | Hudson, Eliara Acipreste | - |
dc.creator | Pires, Ana Clarissa dos Santos | - |
dc.creator | Silva, Luis Henrique Mendes da | - |
dc.date.accessioned | 2020-04-22T15:58:50Z | - |
dc.date.available | 2020-04-22T15:58:50Z | - |
dc.date.issued | 2019-12 | - |
dc.identifier.citation | AGUDELO, Á. J. P. et al. Solvophobic effect of 1-alkyl-3-methylimidazolium chloride on the thermodynamic of complexation between β-cyclodextrin and dodecylpyridinium cation. Colloids and Surfaces A: Physicochemical and Engineering Aspects, [S.l.], v. 582, Dec. 2019. | pt_BR |
dc.identifier.uri | https://www.sciencedirect.com/science/article/abs/pii/S0927775719308386 | pt_BR |
dc.identifier.uri | http://repositorio.ufla.br/jspui/handle/1/40231 | - |
dc.description.abstract | Preferential solvation participate in various supramolecular self-assembly processes, whose thermodynamic properties can be modulated by the addition of ionic liquids (ILs). However, the effects of these liquids on the thermodynamics of the host-guest complexation process remain unexplored. In this study, the thermodynamic properties of the complexation between 1-dodecylpyridinium cations (C12Py+) and β-cyclodextrin (βCD) species in aqueous solutions with different concentrations of 1-alkyl-3-methylimidazolium halides (CnmimX) were investigated by isothermal titration calorimetry. In water, C12Py+ and βCD form a 1:1 inclusion complex, which is enthalpically ( −9.2 ± 0.1 kJ mol−1) and entropically ( 16.1 ± 0.2 kJ mol−1) favorable. However, in IL aqueous solutions, all the βCD―C12Py+ thermodynamic parameters of the complexation change and this IL effect is dependent on the carbon chain length of Cnmim+ cations. ILs with shorter alkyl chains (Cnmim+, n ≤ 4) decreases the system entropy, while ILs with longer alkyl chains (Cnmim+, n ≥ 6) reduce the enthalpy values. These effects are attributed to i) preferential solvation of surfactant tails by ILs; ii) ability of the ILs to modify the 3D water structure and iii) inclusion of IL molecules into the inner cavities of βCD. | pt_BR |
dc.language | en_US | pt_BR |
dc.publisher | Elsevier | pt_BR |
dc.rights | restrictAccess | pt_BR |
dc.source | Colloids and Surfaces A: Physicochemical and Engineering Aspects | pt_BR |
dc.subject | Inclusion complex | pt_BR |
dc.subject | Ionic liquids | pt_BR |
dc.subject | Isothermal titration calorimetry | pt_BR |
dc.subject | β-cyclodextrin | pt_BR |
dc.subject | 1-dodecylpyridinium chloride | pt_BR |
dc.title | Solvophobic effect of 1-alkyl-3-methylimidazolium chloride on the thermodynamic of complexation between β-cyclodextrin and dodecylpyridinium cation | pt_BR |
dc.type | Artigo | pt_BR |
Aparece nas coleções: | DQI - Artigos publicados em periódicos |
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