Date/Time Date(s) - 22/05/20263:30 pm - 4:30 pm
Categories
Dr. Matic Lozinsek
Jožef Stefan Institute
Ljubljana, Slovenia
Abstract:
Crystal structure determination by single-crystal X-ray diffraction remains one of the most important and information-rich characterization techniques in chemistry and materials research. However, obtaining high-quality single crystals of sufficient size is often an experimental challenge. Recent methodological developments have enabled crystal structure determination by 3D electron diffraction (ED) using nanometer-sized crystallites. Similarly, brilliant synchrotron X-ray beams focused to micrometer dimensions allow the elucidation of crystal structures from microcrystalline grains formed under extreme high-temperature and high-pressure conditions (1000–5000 K; 1–100 GPa) generated in laser-heated diamond anvil cell (LH-DAC) experiments.
In this lecture, these methodologies will be illustrated through our recent work on reactive noble-gas compounds. To enable the study of reactive and highly air-sensitive samples by 3D ED in the transmission electron microscope (TEM), we have developed a facile and broadly applicable sample-transfer procedure. Furthermore, the combination of LH-DAC experiments with synchrotron multigrain microdiffraction allows us to explore novel structures and chemical reactivity of noble-gas compounds under extreme conditions.
Speaker Bio:
Dr. Matic Lozinšek is a Senior Research Associate at the Jožef Stefan Institute in Ljubljana, Slovenia, where he leads the Extreme Conditions Chemistry Laboratory (https://eccl.ij.si), and an Assistant Professor at the Jožef Stefan International Postgraduate School. He received his PhD in inorganic chemistry from the University of Ljubljana, followed by a Marie Curie International Outgoing Fellowship at McMaster University in Hamilton, Ontario, Canada. He is a recipient of a European Research Council Starting Grant. His main research passions include inorganic fluorine chemistry, noble-gas compounds, high-pressure experiments in diamond anvil cells, and crystallography.