N-Hexanol association in cyclohexane studied by NMR and NIR spectroscopies
Autor
Flores M.E.
Shibue T.
Sugimura N.
Nishide H.
Martínez F.
Olea A.F.
Moreno-Villoslada I.
Resumen
In this work we present a study on the association of n-hexanol in cyclohexane using NMR and NIR spectroscopies. Abrupt changes on spectroscopic responses have been observed at low molar fractions of n-hexanol, which are related to hydrogen bond network formation that includes trace water. Molecular interactions are found to be dominated by dispersion forces, hydrogen bonding, and dipolar interactions, to different extents at different n-hexanol composition ranges. 1D, DOSY, and T1and T2relaxation time analyses by 1H-NMR allow understanding the dynamics of the mixtures. NIR allows verifying the formation of n-hexanol polymeric species. In addition, an n-hexanol/cyclohexane mixture with an alcohol molar fraction of 0.177 has been titrated with water, revealing the formation of a microemulsion containing water droplets that evolves to a bicontinuous microemulsion with increasing water content. Stable boundary water is detected at the microemulsion interface. © 2014 Elsevier B.V.
Colecciones
Ítems relacionados
Mostrando ítems relacionados por Título, autor o materia.
-
Article
Tuning the molecular/electronic structure of new substituted pyrazoles: Synthesis, biological trials, theoretical approaches and Hammett correlations (2020)
Bustos C.; Alvarez-Thon L.; Molins E.; Moreno-Villoslada I.; Vallejos-Contreras G.; Sánchez C.; Zarate X.; Mac-Leod Carey D.; Schott E. (Elsevier B.V., 2018) -
Review
Cerebral magnetic resonance changes associated with fibromyalgia syndrome [Cambios en la resonancia magnética cerebral asociados al síndrome de fibromialgia] (2020)
Murga I.; Guillen V.; Lafuente J.-V. (Ediciones Doyma, S.L., 2017) -
Article
Self-association of 5,10,15,20-tetrakis-(4-sulfonatophenyl)-porphyrin tuned by poly(decylviologen) and sulfobutylether-β-cyclodextrin (2020)
Flores M.E.; Sano N.; Araya-Hermosilla R.; Shibue T.; Olea A.F.; Nishide H.; Moreno-Villoslada I. (Elsevier Ltd, 2015)