Solvation state of the Tyr side chain in peptides. An FT-IR and 17O NMR approach

Oxygen-17 NMR spectroscopy: Basic principles and applications (part II)

“…Qualitatively these shifts can be understood on the basis of breaking of four hydrogen bonds (two via proton donation and two via donation of the oxygen lone pair electrons) resulting in shielding of the 17 [41] due to increase in the number of hydrogen bonds. In contrast, the effect of solvent induced hydrogen bonding interactions on the AOH group of p-cresol is surprisingly small and does not appear to correlate with the hydrogen-bonding strength of the solvents [837]. This behaviour of p-cresol is at variance with that of alcohols.…”

What vibrations tell about proteins

“…Arg absorption near 1635 and 1673 cm x1 also overlaps with the amide I absorption but exhibits large shifts upon 1 H/ 2 H exchange of x50 and x70 cm x1 , respectively, which distinguishes these bands from the amide I absorption. (Dollinger et al 1986 ;Gerothanassis et al 1992 ;Hienerwadel et al 1997). Both are sensitive to hydrogen bonding.…”

Growth rate enhancement of liquid phase deposited nickel oxide film on ITO/glass under UV photo‐irradiation

“…The peaks at 3375 and 1600 cm −1 have been assigned to HO bond vibrations of physisorbed and chemisorbed water linked to NiO film, respectively 16. The peaks at 1460 and 1250 cm −1 are assigned to CH bond and CO stretching vibration from surface contamination 17, 18. The very weak peaks at around 1000 cm −1 could be ascribed to SiO and SiOH 19 from the etching of glass substrate during the LPD‐NiO deposition.…”