Sun, Tong published the artcileFreezing of Dilute Aqueous-Alcohol Nanodroplets: The Effect of Molecular Structure, Category: alcohols-buliding-blocks, the main research area is freezing alc nanodroplet mol structure property relationship.
We investigate vapor-liquid nucleation and subsequent freezing of aqueous-alc. nanodroplets containing 1-pentanol, 1-hexanol, and their 3-isomers. The aerosols are produced in a supersonic nozzle, where condensation and freezing are characterized by static pressure and Fourier transform IR (FTIR) spectroscopy measurements. At fixed water concentrations, the presence of alc. enables particle formation at higher temperatures since both the equilibrium vapor pressure above the critical clusters and the cluster interfacial free energy are decreased relative to the pure water case. The disappearance of a small free OH peak, observed for pure water droplets, when alcs. are added and shifts in the CH peaks as a function of alc. chain length reveal varying surface partitioning preferences of the alcs. Changes in the FTIR spectra during freezing, as well as changes in the ice component derived from self-modeling curve resolution anal., show that 1-hexanol and 1-pentanol perturb freezing less than their branched isomers do. This behavior may reflect the mol. footprints of the alcs., the available surface area of the droplets, and not only alc. solubility The presence of alcs. also lowers the freezing temperature relative to that of pure water, but when there is clear evidence for the formation of ice, the ice nucleation rates change by less than a factor of ~2-3 for all cases studied.
Journal of Physical Chemistry B published new progress about Clusters. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Category: alcohols-buliding-blocks.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts