Research Overview

Research in the group is driven by our fascination in the structural chemistry of condensed matter and its ties to the material properties. On-going research projects are:

  • High-Pressure Crystal Chemistry of Soft Materials
  • Barocaloric Properties of Coordination Polymers
  • Information Theory in the Analysis of Crystalline Matter & Molecules
  • Chemical and Structural Flexibility of Coordination Polymers

Our current material platform are coordination polymers and related materials. We harness their chemical diversity in the search for materials with improved, new and unexpected properties – the goal is to develop an in-depth understanding of their crystal chemistry as the basis for rational material design. Focus is given to temperature and pressure responsive behaviour such as phase transitions, mechanical properties, negative linear and area compressibilities and negative thermal expansion. While openly fundamental in its nature, our research has strong relations to various applied areas ranging from cooling technologies, material processing and stability, and photovoltaics.

In the pursuit to pin down the relation between composition, structure, and properties, we continuously expand and improve experimental, analytical, and computational methods. Synthesis is complemented by state-of-the-art diffraction and scattering techniques as available at large scale synchrotron and neutron facilities, and custom-made computational tools help us to manage big data and guide us in the interpretation of experimental outcomes.

Some overview publications:
  • C. L. Hobday, G. Kieslich. Structural flexibility in crystalline coordination polymers: a journey along the underlying free energy landscape. Dalton Trans. 2021, 50, 3759-3768.
  • A. K. Cheetham, G. Kieslich, H.-M. H. Yeung. Thermodynamic and Kinetic Effects in the Crystallization of Metal-Organic Frameworks. Acc. Chem. Res. 2018, 51, 659-667.
  • S. Burger, M. Ehrenreich, G. Kieslich. Tolerance Factors of hybrid perovskites: recent improvements and current state of research. J. Mater. Chem. A, 2018, 6, 21785-21793.
  • G. Kieslich, A. Goodwin. The same and not the same: Molecular perovskites and their solid-state analogues. Mater. Horiz. 2017, 4, 362-366.