Philippe Wernet
Professor at Department of Physics and Astronomy; X-ray Photon Science
- Telephone:
- +46 18 471 35 40
- Mobile phone:
- +46 72 999 97 07
- E-mail:
- philippe.wernet@physics.uu.se
- Visiting address:
- Ångströmlaboratoriet, Lägerhyddsvägen 1
- Postal address:
- Box 516
751 20 UPPSALA
Professor at Department of Physics and Astronomy; X-ray Photon Science; Chemical and Bio-Molecular Physics
- Telephone:
- +46 18 471 35 40
- Mobile phone:
- +46 72 999 97 07
- E-mail:
- philippe.wernet@physics.uu.se
- Visiting address:
- Ångströmlaboratoriet, Lägerhyddsvägen 1
- Postal address:
- Box 516
751 20 UPPSALA
- ORCID:
- 0000-0001-7011-9072
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Short presentation
I watch chemical reactions as they take place. X-ray lasers, synchrotrons and lab sources with short X-ray pulses are my high-speed cameras. I use them to select which atomic site in a molecule I look at and which orbital I follow in real time of the reaction. I study small molecules, metal complexes and metalloenzymes to discover basic principles that drive their transformations and that determine how they work.
Read our Science paper and see our program on Chemical and Bio-Molecular Physics.
Biography
Since 2021 Head of the Chemical and Bio-Molecular Physics research program at the Department of Physics and Astronomy at Uppsala University
Since 2019 Professor in Photon Science at the Department of Physics and Astronomy at Uppsala University
2003 - 2019 Staff scientist at Helmholtz-Zentrum Berlin (BESSY II, Berlin, Germany)
2012 Habilitation in physics at Technische Universität Berlin (Germany)
2001 - 2002 Postdoc at the Stanford Synchrotron Radiation Laboratory (SSRL, Stanford, USA)
2000 Postdoc at Deutsches Elektronen-Synchrotron (DESY, Hamburg, Germany)
2000 PhD in experimental physics at Universität Hamburg (Germany)
Serving in the Scientific Advisory Committees at the Linac Coherent Light Source (LCLS, SLAC National Accelerator Laboratory, USA), European XFEL (Hamburg, Germany), and Elettra Sincrotrone Trieste (Italy).
Research
We are working on three main topics:
- Coupling of electronic, spin and nuclear coordinates in the photo-induced dynamics of molecules
- Photochemical bond activation by metal complexes
- Local chemistry of bond-activating metalloproteins
We want to understand, predict and ultimately control the excited-state dynamics of molecules and metal complexes. Probing the coupling of transient electronic structure and nuclear dynamics forms the basis for understanding photocatalytic processes.
We want to explain how metal complexes activate inert bonds. Developing a fundamental understanding of bond activation is the first step of learning how to engineer chemical bonds.
We want to probe the chemical interactions of metal atoms and ions in metalloproteins and how these evolve during a reaction. Learning from nature how to efficiently transform molecules will help us develop new concepts for catalysis.
The foundation of our research is to find new ways of coupling experiments and theory in x-ray spectroscopy. We develop new experimental methods at large-scale x-ray facilities and at lab-based x-ray sources. We want to make available new observables and we work closely with theory groups in quantum chemistry and molecular dynamics to further extend the information content of x-ray spectroscopy.
Our research is part of the Chemical and Bio-Molecular Physics research program.
Publications
Selection of publications
- Resonant Inelastic X-ray Scattering (RIXS) Studies in Chemistry (2019)
- Chemical interactions and dynamics with femtosecond x-ray spectroscopy and the role of x-ray free-electron lasers (2019)
- Orbital-specific Mapping of Chemical Interactions and Dynamics with Femtosecond Soft X-ray Pulses (2017)
- Orbital-specific mapping of the ligand exchange dynamics of Fe(CO)5 in solution (2015)
- Temperature Dependent Soft X-ray Absorption Spectroscopy of Liquids (2014)
- A sample holder for soft x-ray absorption spectroscopy of liquids in transmission mode (2011)
- Probing the oxidation state: A case study of Mn II (acac) 2 and Mn III (acac) 3 on how charge and spin densities determine Mn L-edge X-ray absorption energies
Recent publications
- Accessing metal-specific orbital interactions in C–H activation with resonant inelastic X-ray scattering (2024)
- Automated spectrometer alignment via machine learning (2024)
- Photochemical Formation and Electronic Structure of an Alkane σ-Complex from Time-Resolved Optical and X-ray Absorption Spectroscopy (2024)
- Tracking C–H activation with orbital resolution (2023)
- A Δ-learning strategy for interpretation of spectroscopic observables (2023)
All publications
Articles
- Accessing metal-specific orbital interactions in C–H activation with resonant inelastic X-ray scattering (2024)
- Automated spectrometer alignment via machine learning (2024)
- Photochemical Formation and Electronic Structure of an Alkane σ-Complex from Time-Resolved Optical and X-ray Absorption Spectroscopy (2024)
- Tracking C–H activation with orbital resolution (2023)
- A Δ-learning strategy for interpretation of spectroscopic observables (2023)
- Photoinduced bond oscillations in ironpentacarbonyl give delayed synchronous bursts of carbonmonoxide release (2022)
- Electronic Structure Changes of an Aromatic Amine Photoacid along the Forster Cycle (2022)
- From Local Covalent Bonding to Extended Electric Field Interactions in Proton Hydration (2022)
- Capturing Atom-Specific Electronic Structural Dynamics of Transition-Metal Complexes with Ultrafast Soft X-Ray Spectroscopy (2022)
- Using X-ray free-electron lasers for spectroscopy of molecular catalysts and metalloenzymes (2021)
- Resonant X-ray emission spectroscopy from broadband stochastic pulses at an X-ray free electron laser (2021)
- Following Metal-to-Ligand Charge-Transfer Dynamics with Ligand and Spin Specificity Using Femtosecond Resonant Inelastic X-ray Scattering at the Nitrogen K-Edge (2021)
- Chemical interactions and dynamics with femtosecond x-ray spectroscopy and the role of x-ray free-electron lasers (2019)
- Direct Determination of Absolute Absorption Cross Sections at the L-Edge of Dilute Mn Complexes in Solution Using a Transmission Flatjet (2018)
- Soft x-ray absorption spectroscopy of metalloproteins and high-valent metal-complexes at room temperature using free-electron lasers (2017)
- Viewing the Valence Electronic Structure of Ferric and Ferrous Hexacyanide in Solution from the Fe and Cyanide Perspectives (2016)
- Orbital-specific mapping of the ligand exchange dynamics of Fe(CO)5 in solution (2015)
- Temperature Dependent Soft X-ray Absorption Spectroscopy of Liquids (2014)
- A sample holder for soft x-ray absorption spectroscopy of liquids in transmission mode (2011)
- Probing the oxidation state: A case study of Mn II (acac) 2 and Mn III (acac) 3 on how charge and spin densities determine Mn L-edge X-ray absorption energies