“…There are numerous vibrational studies targeting the interplay of non-covalent interactions in model systems for biomolecules in the gas phase. Examples include the structural analysis of oligosaccharides, 14,15 lipids, 16,17 metal ion-amino acid and -peptide complexes, 12,[18][19][20][21][22][23][24][25] studies of model peptides for the selectivity filter of potassium ion channels, [26][27][28] solvation studies of biomolecules, [29][30][31][32][33] and solvent-induced protomer switching, [34][35][36][37] to name just a few.…”