title: Supramolecular influence on cis-trans isomerization probed by ion mobility spectrometry.
abstract: We used tandem ion mobility spectrometry measurements to investigate how the photo-isomerization of a chromophore (a methylpyridinium derivative) is affected by the complexation with a crown ether. A dramatic blue-shift of the photo-isomerization spectrum was observed upon complexation, which could be well reproduced by ab initio calculations. Our results support that the observed changes in the photo-physical properties of the chromophore originate from the charge-solvation of its pyridinium moiety by the host cage.
authors.affiliation: Mass Spectrometry Laboratory, University of Liège, Quartier Agora, Allée du Six Aout 11, B-4000 Liège, Belgium.
authors.forename: Izabella
authors.initials: I
authors.lastname: Czerwinska
authors.affiliation: Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France.
authors.forename: Alexander
authors.identifier: 0000-0002-8812-8548
authors.initials: A
authors.lastname: Kulesza
authors.affiliation: Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France.
authors.forename: Changmin
authors.initials: C
authors.lastname: Choi
authors.affiliation: Univ Lyon, Université Claude Bernard Lyon 1, Ens de Lyon, CNRS, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, F-69100, Villeurbanne, France. fabien.chirot@univ-lyon1.fr.
authors.forename: Fabien
authors.initials: F
authors.lastname: Chirot
authors.affiliation: Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France.
authors.forename: Anne-Laure
authors.initials: AL
authors.lastname: Simon
authors.affiliation: Mass Spectrometry Laboratory, University of Liège, Quartier Agora, Allée du Six Aout 11, B-4000 Liège, Belgium.
authors.forename: Johann
authors.initials: J
authors.lastname: Far
authors.forename: Christopher
authors.initials: C
authors.lastname: Kune
authors.affiliation: Mass Spectrometry Laboratory, University of Liège, Quartier Agora, Allée du Six Aout 11, B-4000 Liège, Belgium.
authors.forename: Edwin
authors.initials: E
authors.lastname: de Pauw
authors.affiliation: Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Dugourd