Articles you may be interested inInsights into the ultraviolet spectrum of liquid water from model calculations: The different roles of donor and acceptor hydrogen bonds in water pentamers J. Chem. Phys. 137, 184301 (2012); 10.1063/1.4764044 High-resolution ultraviolet spectroscopy of p -fluorostyrene-water: Evidence for a σ -type hydrogen-bonded dimer Structures of hydrogen-bonded clusters of benzyl alcohol with water investigated by infrared-ultraviolet double resonance spectroscopy in supersonic jet J. Chem. Phys. 111, 8438 (1999); 10.1063/1.480184 Microscopic solvent structure of subcritical and supercritical methanol from ultraviolet/visible absorption and fluorescence spectroscopiesAn in situ Raman spectroscopy study of subcritical and supercritical water: The peculiarity of hydrogen bonding near the critical point UV-visible spectra of quinoline was measured in sub-and supercritical water (25°CϽT Ͻ430°C and 0.1 MPaϽ PϽ40 MPa͒, and the degree of hydrogen bonding between quinoline and water was estimated from solvatochromic shifts in the -* absorbance band. Hydrogen bonding decreased with increasing temperature from 25 to 360°C. At supercritical conditions (380°CϽT Ͻ400°C), hydrogen bonding abruptly decreased where the isothermal compressibility of water was large (0.5Ͻ r Ͻ1.5). In this condition, local density around quinoline was lower than bulk density, namely negative solvation, and it led to the cleavage of hydrogen bonding between quinoline and water.

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