Talik, Agnieszka; Tarnacka, Magdalena; Geppert-Rybczynska, Monika; Hachula, Barbara; Bernat, Roksana; Chrzanowska, Agnieszka; Kaminski, Kamil; Paluch, Marian published the artcile< Are hydrogen supramolecular structures being suppressed upon nanoscale confinement? The case of monohydroxy alcohols>, Recommanded Product: 2-Ethylhexan-1-ol, the main research area is monohydroxy alc silica alumina nanopore nanoconfinement; Confinement; Dielectric spectroscopy; Hydrogen bonds; Infrared spectroscopy; Interfacial energy; Monohydroxy alcohols; Self-assembly; Surface effects; Surface tension.
In this paper, the mol. dynamics, H-bonding pattern and wettability of the primary and secondary monohydroxyalcs., 2-ethyl-1-hexanol (2E1H), 2-ethyl-1-butanol (2E1B) and 5-methyl-3-heptanol (5M3H) infiltrated into native and functionalized silica and alumina pores having pore diameters, d = 4 nm and d = 10 nm, have been studied with the use of Broadband Dielec. (BDS) and Fourier Transform IR (FTIR) spectroscopies, as well as contact angle measurements. We found significant differences in the behavior of alcs. forming chain- (2E1H, 2E1B) or micelle-like (5M3H) supramol. structures despite of their similarities in the wettability and interfacial energy. It turned out that nanoassocs. as well as H-bonds are more or less affected by the confinement dependently on the chem. structure and alc. order. Moreover, a peculiar behavior of the self-assemblies at the interface was noted in the latter material (5M3H). Finally, it was found that irresp. to the sample, type of pores, functionalization, the temperature evolution of Debye relaxation times, τD, of the confined systems deviates from the bulk behavior always at similar τD due to vitrification of the interfacial layer. This finding is a clear indication that unexpectedly dynamics (mobility) of the supramol. structures close to the hydrophilic and hydrophobic surfaces is similar in each system.
Journal of Colloid and Interface Science published new progress about Contact angle. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Recommanded Product: 2-Ethylhexan-1-ol.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts