lunduniversity.lu.se

Department of Chemistry

Lund University

Denna sida på svenska This page in English

The Wärnmark Group

                   

          The KW group during group excursion to Skrylle on October 1. 2018. 

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 (3MLCTexcited state by increasing the complex ligand field and destabilizing a low-lying metal-centered state (MC).

                    

               Picture: Dr. Lisa A. Fredin, Front Cover ChemSusChem 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

October 2019

The Iron Carbene Project has received a grant of 35,000,000 SEK from the Knut and Alice Wallenberg Foundation. 

Esmaeil Sheibani has finished his couple of months as visiting researcher in the group. Huge thanks for your input and good luck in the future!

September 2019

Samuel Persson has taken on a new position in the group, now as a PhD student. He will be working on the Iron Carbene Project. Congratulations and welcome back!

We have a new post-doctoral researcher, Alpesh Kumar Sharma, working on the FeCAB project. Welcome! 

Alexander Braune has decided to continue working on the FeCAB project, now as a project worker. Good luck!

Events

2019-12-12

Dissertation - Olga Gordivska

"Towards Harnessing Solar Energy with Abundant Iron N-Heterocyclic Carbene Complexes"

Faculty opponent is Prof. James McCusker, Michigan State University

Kemicentrum KC:B, 9:00-12:00

2020-01-31 - 2020-02-01

Visions in Chemistry - The Torkil Holm Symposium 2020

11 renowned researchers will give plenary talks during the symposium and members of the group will attend.

Location: DGI-byen, Copenhagen

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