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Seminar Pr Tomislav FRISCIC
14 March de 11:00 - 12:00
Pr Tomislav Friščić
From Grinding to Ignition: Opportunities of Mechanochemistry in Green Chemistry and Materials Science
Mechanochemisty,[1] i.e. chemical and materials transformations driven or facilitated by mechanical action in the form of impact or shear, has become a highly attractive, generally applicable approach for the synthesis of molecules and materials. While mechanochemical methods offer an opportunity to eliminate the use of bulk solvents, they are also intriguing because they can facilitate reactivity that is difficult to access under more conventional solution-based conditions.
This presentation will outline our group’s efforts in using mechanochemistry to advance the understanding and synthesis of metal-organic and covalent-organic framework (MOF, COF) materials, based on the use of methods for real-time monitoring via synchrotron X-ray diffraction or Raman spectroscopy.[2,3] In terms of fundamental studies, we will illustrate how mechanochemical synthesis and reaction monitoring have helped advance the fundamental understanding of the stability of MOFs, ultimately supporting the development of the first methodology for first-principles (ab initio) crystal structure prediction (CSP) of such materials.[4] In the context of synthesis, we will outline the first in-roads of using the mild, but scalable Resonant Acoustic Mixing (RAM) methodology for the synthesis of MOFs, COFs, as well as entirely inorganic materials such as lead halide perovskite solids.[5,6]
Finally, we will show how our mechanochemistry-inspired studies of MOF stability and energetics became a springboard for the development of a new type of tunable aerospace hypergolic fuels, which can provide a greener alternative for highly toxic, carcinogenic hydrazines.[7]
References
[1] Angew. Chem. Int. Ed. 2020, 59, 1018; [2] Nature Chem. 2013, 5, 66; [3] Acc. Chem. Res. 2022, 55, 1262; [4] J. Am. Chem. Soc. 2023, 145, 3515; [5] Chem. Sci. 2020, 11, 7578; [6] Angew. Chem. Int. Ed. 2024, e202404539; [7] Science Adv. 2019, 5, eaav9044.