title: Gas-phase versus liquid-phase structures by electrospray ionization mass spectrometry.
abstract: Preferred protonation: Does electrospray ionization mass spectrometry produce gas-phase or liquid-phase structures? The preferred protonation site in p-aminobenzoic acid depends upon the medium, and the structure of its conjugate acid varies with the solvent used during spraying.
authors.affiliation: Department Chemistry, University of Minnesota, Minneapolis, MN 55455, USA.
authors.forename: Zhixin
authors.initials: Z
authors.lastname: Tian
authors.forename: Steven R
authors.initials: SR
authors.lastname: Kass