Leif Hammarström group
Fundamental mechanistic studies related to artificial photosynthesis and photoredox catalysis, using laser-spectroscopy, photochemical and electrochemical methods.
About us
The Hammarström Group works on fundamental mechanistic studies related to artificial photosynthesis and photoredox catalysis, using laser-spectroscopy, photochemical and electrochemical methods. We are part of the Swedish Consortium for Artificial Photosynthesis. Our studies are focused on design and study of molecular systems for controlling photoinduced electron transfer and proton-coupled electron transfer, and for coupling photoinduced charge separation to multi-electron reactions.
Read our paper on Proton-Coupled Energy Transfer in Science.
Our research
Welcome to the Leif Hammarström research group, to the right you will see a list of our research. Follow the links to read more about specific research areas.
We work on fundamental mechanisms of photoinduced and proton-coupled electron transfer reactions, in molecular and molecule/semiconductor systems. We work with experimental tools to distinguish step-wise and concerted proton-coupled electron transfer mechanisms, and determine conditions allowing for concerted reactions in multi-electron/-proton reactions.
We study synthetic catalysts for H2 production, CO2 reduction and water splitting to understand the catalytic cycle. By a combination of spectroscopic, photochemical and electrochemical methods we capture intermediates and study critical reaction steps.
We also study electron transfer dynamics in dye-sensitized photocathodes of p-type materials (e.g. NiO). They open for the possibility of tandem solar cells for high photovoltage devices and for solar fuels generation with molecular catalysts, where H2 production and water splitting occur in separate half-cell reactions.
Research projects
- Proton-coupled electron transfer
- Ultra-fast electron transfer
- p-type dye-sensitized solar cells and photoelectrochemical cells
- Catalysts and mechanisms
- Accumulative electron transfer
- Q-dot/molecular systems
- Photoredox catalysis
- Soap Film Artificial Photosynthesis (SoFiA)
Group members
Publications
Part of ACS Catalysis, p. 4186-4201, 2024
- DOI for Ultrafast Electron Transfer from CuInS2 Quantum Dots to a Molecular Catalyst for Hydrogen Production: Challenging Diffusion Limitations
- Download full text (pdf) of Ultrafast Electron Transfer from CuInS2 Quantum Dots to a Molecular Catalyst for Hydrogen Production: Challenging Diffusion Limitations
Part of Nature Chemistry, p. 624-632, 2024
Part of Nature Communications, 2024
- DOI for Embedding biocatalysts in a redox polymer enhances the performance of dye-sensitized photocathodes in bias-free photoelectrochemical water splitting
- Download full text (pdf) of Embedding biocatalysts in a redox polymer enhances the performance of dye-sensitized photocathodes in bias-free photoelectrochemical water splitting
Realizing Symmetry-Breaking Architectures in Soap Films
Part of Physical Review Letters, 2024
Part of Chemical Science, p. 3957-3970, 2024
Meta-Ortho Effect on the Excited State Pathways of Chloroanilines
Part of European Journal of Organic Chemistry, 2024
Part of ACS Catalysis, p. 585-593, 2024
Access to long-lived room temperature phosphorescence through auration of 2,1,3-benzothiadiazole
Part of Dalton Transactions, p. 5658-5664, 2024
Part of Inorganic Chemistry, p. 18391-18398, 2023
Mechanistic Insights into the Photocatalytic Hydrogen Production of Y5 and Y6 Nanoparticles
Part of The Journal of Physical Chemistry C, p. 12631-12639, 2023
Part of ACS Catalysis, p. 9476-9486, 2023
Part of Physical Chemistry, Chemical Physics - PCCP, p. 2935-2945, 2023
Part of Chemical Reviews, p. 6545-6611, 2023
Part of Journal of the American Chemical Society, p. 11067-11073, 2023
A Bidirectional Bioinspired [FeFe]-Hydrogenase Model
Part of Journal of the American Chemical Society, p. 3614-3625, 2022
Part of Energy Advances, p. 303-311, 2022
- DOI for Assessing the effect of surface states of mesoporous NiO films on charge transport and unveiling an unexpected light response phenomenon in tandem dye-sensitized solar cells
- Download full text (pdf) of Assessing the effect of surface states of mesoporous NiO films on charge transport and unveiling an unexpected light response phenomenon in tandem dye-sensitized solar cells
Gold nanoparticle-based supramolecular approach for dye-sensitized H-2-evolving photocathodes
Part of Dalton Transactions, p. 15716-15724, 2022
Sustainable Ir-Photoredox Catalysis by Means of Heterogenization
Part of ACS ORGANIC & INORGANIC AU, p. 427-432, 2022
Part of Journal of the American Chemical Society, p. 7308-7319, 2022
- DOI for Concerted and Stepwise Proton-Coupled Electron Transfer for Tryptophan-Derivative Oxidation with Water as the Primary Proton Acceptor: Clarifying a Controversy
- Download full text (pdf) of Concerted and Stepwise Proton-Coupled Electron Transfer for Tryptophan-Derivative Oxidation with Water as the Primary Proton Acceptor: Clarifying a Controversy
Proton-coupled energy transfer in molecular triads
Part of Science, p. 742-746, 2022
Self-Assembled Liposomes Enhance Electron Transfer for Efficient Photocatalytic CO2 Reduction
Part of Journal of the American Chemical Society, p. 9399-9412, 2022
Part of Journal of Physics D, 2022
Part of Chemical Science, 2022
Electron-hopping across dye-sensitized mesoporous NiO surfaces
Part of Physical Chemistry, Chemical Physics - PCCP, p. 29850-29861, 2022
Nanotechnology for catalysis and solar energy conversion
Part of Nanotechnology, 2021
Part of Journal of Physical Chemistry A, p. 7670-7684, 2021
Part of ACS Nano, p. 13504-13515, 2021
Part of The Journal of Physical Chemistry C, p. 14751-14764, 2021
Part of Journal of the American Chemical Society, p. 2875-2885, 2021
- DOI for Panchromatic Ternary Polymer Dots Involving Sub-Picosecond Energy and Charge Transfer for Efficient and Stable Photocatalytic Hydrogen Evolution
- Download full text (pdf) of Panchromatic Ternary Polymer Dots Involving Sub-Picosecond Energy and Charge Transfer for Efficient and Stable Photocatalytic Hydrogen Evolution
Photoredox Catalysis Using Heterogenized Iridium Complexes**
Part of Chemistry - A European Journal, p. 16966-16977, 2021
Roadmap towards solar fuel synthesis at the water interface of liposome membranes dagger
Part of Chemical Society Reviews, p. 4833-4855, 2021
Part of ChemSusChem, p. 2902-2913, 2021
Part of European Journal of Inorganic Chemistry, p. 1263-1270, 2021
Imidazolium-modification enhances photocatalytic CO2 reduction on ZnSe quantum dots
Part of Chemical Science, p. 9078-9087, 2021
Proton-Coupled Electron Transfer Guidelines, Fair and Square
Part of Journal of the American Chemical Society, p. 560-576, 2021
Photoinduced Fano Resonances between Quantum Confined Nanocrystals and Adsorbed Molecular Catalysts
Part of Nano Letters, p. 5813-5818, 2021
Part of ChemPhotoChem, p. 287-290, 2020
Part of ChemSusChem, p. 1844-1855, 2020
Part of ACS Applied Materials and Interfaces, p. 31372-31381, 2020
Using Surface Amide Couplings to Assemble Photocathodes for Solar Fuel Production Applications
Part of ACS Applied Materials and Interfaces, p. 4501-4509, 2020
Part of Journal of the American Chemical Society, p. 11550-11559, 2020
Part of Sustainable Energy & Fuels, p. 3668-3676, 2020
- DOI for From non-innocent to guilty: on the role of redox-active ligands in the electro-assisted reduction of CO2 mediated by a cobalt(ii)-polypyridyl complex
- Download full text (pdf) of From non-innocent to guilty: on the role of redox-active ligands in the electro-assisted reduction of CO2 mediated by a cobalt(ii)-polypyridyl complex
Excited-state proton-coupled electron transfer within ion pairs
Part of Chemical Science, p. 3460-3473, 2020
Understanding the Role of Surface States on Mesoporous NiO Films
Part of Journal of the American Chemical Society, 2020
Part of Dalton Transactions, p. 858-865, 2020
- DOI for The reactivity of molecular oxygen and reactive oxygen species with [FeFe] hydrogenase biomimetics: reversibility and the role of the second coordination sphere
- Download full text (pdf) of The reactivity of molecular oxygen and reactive oxygen species with [FeFe] hydrogenase biomimetics: reversibility and the role of the second coordination sphere
Part of Chemical Science, p. 5582-5588, 2019
- DOI for Metal vs. ligand protonation and the alleged proton-shuttling role of the azadithiolate ligand in catalytic H-2 formation with FeFe hydrogenase model complexes
- Download full text (pdf) of Metal vs. ligand protonation and the alleged proton-shuttling role of the azadithiolate ligand in catalytic H-2 formation with FeFe hydrogenase model complexes
Part of Chemical Communications, p. 7918-7921, 2019
- DOI for A heavy metal-free CuInS2 quantum dot sensitized NiO photocathode with a Re molecular catalyst for photoelectrochemical CO2 reduction
- Download full text (pdf) of A heavy metal-free CuInS2 quantum dot sensitized NiO photocathode with a Re molecular catalyst for photoelectrochemical CO2 reduction
Part of Journal of the American Chemical Society, p. 17245-17259, 2019
Concerted proton-electron transfer reactions in the Marcus inverted region
Part of Science, p. 471-475, 2019
Part of Dalton Transactions, p. 16894-16898, 2019
Contact
- If you have questions about our research, you are welcome to contact programme professor Leif Hammarström.
- Leif Hammarström