INIFTA   05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Supramolecular organogels based on mesogenic 2,7-difunctionalized triphenylenes as a simple system for water content assessment in light alcohols
Autor/es:
HUCK-IRIART, CRISTIÁN; CUKIERNIK, FABIO D.; GIOVANETTI, LISANDRO J.; VADRA, NAHIR; DI CHENNA, PABLO H.
Revista:
NEW JOURNAL OF CHEMISTRY
Editorial:
ROYAL SOC CHEMISTRY
Referencias:
Lugar: CAMBRIDGE; Año: 2020 vol. 44 p. 2423 - 2434
ISSN:
1144-0546
Resumen:
A series of three triphenylene compounds -denoted 2,7-THTP-DiCnOH- bearing four hexyloxy ancillary chains and two variable-length alkoxy chains terminally functionalized with hydroxyl groups have been synthesized and characterized. The studied compounds exhibited thermotropic mesomorphism; the detailed nature of the mesophases was found to depend on the relative positions of the terminal functional groups relative to the crown formed by the ancillary chains. All the studied compounds were able to act as supramolecular gelators in a variety of alcohols, their organogelating ability has been rationalized in terms of physicochemical parameters like ielectric constant, which allowed to establish very precise predictive ?solvent gelation windows? for each compound. Remarkably stable gels have been detected for 2,7-THTPDiC6OH in methanol. As a proof of principle, we present the water sensing performance as a rapid method for the assessment of water content in alcohols samples based on the influence that the water content exerts on gels´thermostability.