Robalo, Joao R. published the artcileInfluence of Methylene Fluorination and Chain Length on the Hydration Shell Structure and Thermodynamics of Linear Diols, Application of Pentane-1,5-diol, the publication is Journal of Physical Chemistry B (2021), 125(49), 13552-13564, database is CAplus and MEDLINE.
The interplay between the local hydration shell structure, the length of hydrophobic solutes, and their identity (perfluorinated or not) remains poorly understood. We address this issue by combining Raman-multivariate curve resolution (Raman-MCR) spectroscopy, simulation, and quantum-mech. calculations to quantify the thermodn. and the first principle interactions behind the formation of defects in the hydration shell of alkyl-diol and perfluoroalkyl-diol chains. The hydration shell of the fluorinated diols contains substantially more defects than that of the nonfluorinated diols; these defects are water hydroxy groups that do not donate hydrogen bonds and which either point to the solute (radial-dangling OH) or not (nonradial-dangling OH). The number of radial-dangling OH defects per carbon decreases for longer chains and toward the interior of the fluorinated diols, mainly due to less favorable electrostatics and exchange interactions; nonradial-dangling OH defects per carbon increase with chain length. In contrast, the hydration shell of the nonfluorinated diols only contains radial-dangling defects, which become more abundant toward the center of the chain and for larger chains, predominantly because of more favorable dispersion interactions. These results have implications for how the folding of macromols., ligand binding to biomacromols., and chem. reactions at water-oil interfaces could be modified through the introduction of fluorinated groups or solvents.
Journal of Physical Chemistry B published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C5H12O2, Application of Pentane-1,5-diol.
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