W
Wojciech Gawelda
Researcher at Adam Mickiewicz University in Poznań
Publications - 101
Citations - 4658
Wojciech Gawelda is an academic researcher from Adam Mickiewicz University in Poznań. The author has contributed to research in topics: Femtosecond & Absorption spectroscopy. The author has an hindex of 32, co-authored 91 publications receiving 4086 citations. Previous affiliations of Wojciech Gawelda include Spanish National Research Council & European XFEL.
Papers
More filters
Journal ArticleDOI
Femtosecond XANES Study of the Light-Induced Spin Crossover Dynamics in an Iron(II) Complex
Ch. Bressler,Christopher J. Milne,Van-Thai Pham,Amal Elnahhas,R. M. van der Veen,R. M. van der Veen,Wojciech Gawelda,Wojciech Gawelda,Steven L. Johnson,Paul Beaud,Daniel Grolimund,Maik Kaiser,Maik Kaiser,Camelia N. Borca,Gerhard Ingold,Rafael Abela,Majed Chergui +16 more
TL;DR: These results resolve a long-standing issue about the population mechanism of quintet states in iron(II)-based complexes, which are identified as a simple 1MLCT→3 MLCT→5T cascade from the initially excited state.
Journal ArticleDOI
Tracking excited-state charge and spin dynamics in iron coordination complexes
Weiya Zhang,Roberto Alonso-Mori,Uwe Bergmann,Christian Bressler,Matthieu Chollet,Andreas Galler,Wojciech Gawelda,Ryan G. Hadt,Robert W. Hartsock,Thomas Kroll,Kasper S. Kjær,Katharina Kubicek,Henrik T. Lemke,Huiyang W. Liang,Drew A. Meyer,Martin Nielsen,Carola M. Purser,Joseph Robinson,Edward I. Solomon,Zheng Sun,Dimosthenis Sokaras,Tim Brandt van Driel,Gyoergy Vanko,Tsu-Chien Weng,Diling Zhu,Kelly J. Gaffney +25 more
TL;DR: It is demonstrated that femtosecond resolution X-ray fluorescence spectroscopy, with its sensitivity to spin state, can elucidate the spin crossover dynamics of [Fe(2,2′-bipyridine)3]2+ on photoinduced metal-to-ligand charge transfer excitation.
Journal ArticleDOI
Ultrafast Nonadiabatic Dynamics of [FeII(bpy)3]2+ in Solution
Wojciech Gawelda,Andrea Cannizzo,Van-Thai Pham,Frank van Mourik,Christian Bressler,Majed Chergui +5 more
TL;DR: A simple model of avoided crossings between singlet and triplet potential curves, induced by the strong spin-orbit interaction is proposed, which concludes that the ultrafast relaxation of aqueous iron(II)-tris(bipyridine) upon excitation into the singlet metal-to-ligand charge-transfer band can be described by the Fermi golden rule, despite its high value.
Journal ArticleDOI
Broadband femtosecond fluorescence spectroscopy of [Ru(bpy)3]2+
Andrea Cannizzo,Frank van Mourik,Wojciech Gawelda,Goran Zgrablić,Christian Bressler,Majed Chergui +5 more
TL;DR: Femtosecond fluorescence-upconversion studies of aq.2+ show a short-lived vibrationally hot emission of the singlet metal-to-ligand charge-transfer state, with an ultrafast intersystem crossing to the triplet state at const.
Journal ArticleDOI
Light-induced spin crossover in Fe(II)-based complexes: The full photocycle unraveled by ultrafast optical and X-ray spectroscopies
Andrea Cannizzo,Christopher J. Milne,Cristina Consani,Wojciech Gawelda,Ch. Bressler,F. van Mourik,Majed Chergui +6 more
TL;DR: In this paper, the light-induced spin and structure changes upon excitation of the singlet metal-to-ligand charge transfer (1MLCT) state of Fe(II)-polypyridine complexes are investigated in detail in the case of aqueous iron-tris-bipyridine ([FeII(bpy)3]2+) by a combination of ultrafast optical and X-ray spectroscopies.