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Microhydration of Protonated Biomolecular Building Blocks: IR Spectra of Protonated Imidazole–Water n Complexes
Author(s) -
Andrei HoriaSorin,
Solcà Nicola,
Dopfer Otto
Publication year - 2006
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200500432
Subject(s) - protonation , imidazole , chemistry , photodissociation , infrared spectroscopy , spectroscopy , proton , spectral line , ionic bonding , mass spectrum , ultraviolet visible spectroscopy , photochemistry , mass spectrometry , stereochemistry , ion , organic chemistry , physics , chromatography , quantum mechanics , astronomy
The sequential microhydration process of protonated imidazole (ImH + ) was studied by resonant IR photodissociation spectroscopy of mass‐selected ImH + ⋅(H 2 O) n clusters (see figure). The IR spectra directly probe the effects of both protonation and stepwise hydration on the acidity of the NH groups of ImH + with relevance to proton transport in biochemical processes and ionic liquids.