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Department of Chemistry

Lund University

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The Wärnmark Group

The KW during the National Meeting of the Swedish Chemical Society in Linköping, June 2022

Research - Main Fields

Currently, Iron Carbene Sensitizers are a big part of research in our group, where the electronic properties of iron complexes are studied and adjusted. Using strongly σ-donating N-heterocyclic carbene (NHC) ligands, the aim is to alter the energy of electronic states in iron complexes, making them potential candidates as photosensitizers in solar cells. Because of abundance and availability of iron, replacing the widely employed, scarce, ruthenium and iridium-based complexes is an exciting prospect. The challenge is to extend the lifetime of a short-lived triplet metal-to-ligand charge transfer (3MLCT) excited state by increasing the complex ligand field and destabilizing a low-lying metal-centered state (MC).

              

              Picture: Lisa A. Fredin, Front Cover ChemSusChem, 9(7) 2016

Another project is within the field of Supramolecular Chemistry - the chemistry beyond the molecule. This means that we are using non-covalent interactions between molecules, mainly hydrogen bonds, to construct assemblies of molecules that should have new properties that are more than the sum of the individual molecules. Self-assembly is used in Nature to build up organs such as the brain from smaller components. In our group we use advanced organic chemistry to covalently build up the molecules (building blocks) we want to assemble by non-covalent interactions after designing the molecules with respect to hydrogen-bonding pattern and their spatial positions to form the desired aggregate. For this purpose we use molecular modeling and quantum mechanical calculations. Characterization of the so formed assembles in solution is challenging and a lot of effort is devoted to apply and to develop methods for their characterization, some involving advanced mathematics.

                     

 

               Picture: Dovilė Račkauskaitė, Front Cover JACS 33/2015

Group News

June 2022

The group has an open position for a PhD student in the group. LU vacancies
Additionally, there is an opening for a post-doctoral researcher, more information here

Vicky successfully defended her thesis and obtained her degree. Congratulations on your achievement and thank you for all your contributions to the group.

The whole group attended the Second National Meeting of the Swedish Chemical Society in Linköping. All group members presented their research in a presentation or on a poster. 

May 2022

Kenneth, Samuel and Lisa travelled to Cancun, Mexico for the Frontiers in Photochemistry conference. They all gave oral presentations during their stay.

April 2022

Lisa de Groot presented her half-time report titled "Photoredox chemistry driven by visible light and iron N-heterocyclic carbene complexes". Nicely done and keep up the good work!

Events

No upcoming events

Funding

      

   

   

   

    

Contact

Kenneth Wärnmark

Professor

E-mail:

kenneth.warnmark@chem.lu.se

Phone:

+46 (0)46-222 82 17

Postal address:

Lund University

Center for analysis and synthesis (CAS)

P.O. Box 124

SE-221 00 Lund

Sweden

Visiting address:

Kemicentrum

Naturvetarvägen 14

Lund

Internal mail:

Pick-up location 1