title: Photoelectron spectrum of isolated ion-pairs in ionic liquid vapor.
abstract: The gas-phase valence binding energy spectrum of isolated ion-pairs of the commonly used [1-ethyl-3-methylimidazolium][bis(trifluoromethylsulfonyl)imide)] room-temperature ionic liquid is obtained by photoionization of a molecular beam of ionic liquid vapor by extreme ultraviolet light. The isolated ion-pair nature of the ionic liquid vapor is corroborated by single photon ionization mass spectroscopy, complemented by computed vaporization energetics of ion-pairs and clusters of ion-pairs. The valence binding energy spectrum of the isolated ion-pairs is discussed in comparison with available liquid-phase data and theoretical density functional theory calculations.
authors.forename: Daniel
authors.initials: D
authors.lastname: Strasser
authors.forename: Fabien
authors.initials: F
authors.lastname: Goulay
authors.forename: Manish S
authors.initials: MS
authors.lastname: Kelkar
authors.forename: Edward J
authors.initials: EJ
authors.lastname: Maginn
authors.forename: Stephen R
authors.initials: SR
authors.lastname: Leone