title: Pump-Probe Fragmentation Action Spectroscopy: A Powerful Tool to Unravel Light-Induced Processes in Molecular Photocatalysts.
abstract: We present a proof of concept that ultrafast dynamics combined with photochemical stability information of molecular photocatalysts can be acquired by electrospray ionization mass spectrometry combined with time-resolved femtosecond laser spectroscopy in an ion trap. This pump-probe "fragmentation action spectroscopy" gives straightforward access to information that usually requires high purity compounds and great experimental efforts. Results of gas-phase studies on the electronic dynamics of two supramolecular photocatalysts compare well to previous findings in solution and give further evidence for a directed electron transfer, a key process for photocatalytic hydrogen generation.
authors.affiliation: Fachbereich Chemie, TU Kaiserslautern, Erwin-Schrödinger-Str. 52-54, 67663, Kaiserslautern, Germany.
authors.forename: Dimitri
authors.identifier: 0000-0003-3124-9274
authors.initials: D
authors.lastname: Imanbaew
authors.affiliation: Fachbereich Chemie, TU Kaiserslautern, Erwin-Schrödinger-Str. 52-54, 67663, Kaiserslautern, Germany.
authors.forename: Johannes
authors.initials: J
authors.lastname: Lang
authors.affiliation: Fakultät für Chemie, TU München, Lichtenbergstraße 4, 85747, Garching, Germany.
authors.forename: Maxim F
authors.initials: MF
authors.lastname: Gelin
authors.affiliation: Institut für Anorganische Chemie I, Universität Ulm, Albert-Einstein-Allee, 89081, Ulm, Germany.
authors.forename: Simon
authors.initials: S
authors.lastname: Kaufhold
authors.affiliation: Institut für Anorganische Chemie I, Universität Ulm, Albert-Einstein-Allee, 89081, Ulm, Germany.
authors.forename: Michael G
authors.initials: MG
authors.lastname: Pfeffer
authors.affiliation: Institut für Anorganische Chemie I, Universität Ulm, Albert-Einstein-Allee, 89081, Ulm, Germany.
authors.forename: Sven
authors.initials: S
authors.lastname: Rau
authors.affiliation: Fachbereich Chemie, TU Kaiserslautern, Erwin-Schrödinger-Str. 52-54, 67663, Kaiserslautern, Germany.|Landesforschungszentrum OPTIMAS, Erwin-Schrödinger-Str. 46, 67663, Kaiserslautern, Germany.
authors.forename: Christoph
authors.initials: C
authors.lastname: Riehn
keywords: electronic dynamics; femtochemistry; gas-phase laser spectroscopy; supramolecular chemistry; transient anisotropy