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Materials Faculty Candidate Seminar: Dr. Daniel Straus, Princeton University, “Structural Surprises in Inorganic and Molecular Solids"

Event Type
Seminar/Symposium
Sponsor
Materials Chemistry
Location
1024 Chem Annex
Date
Jan 11, 2022   All Day
Speaker
Dr. Daniel Straus
Contact
Wendy Wimmer
E-Mail
wwimmer@illinois.edu
Phone
217-333-2983
Views
39
Originating Calendar
Chemistry - Inorganic/ Materials Chemistry Seminars

Even in some of the most heavily studied materials, a careful structural analysis can solve stubborn mysteries. The first part of my talk focuses on cesium lead iodide (CsPbI3), an inorganic halide perovskite that is unstable at room temperature. I use X-ray diffraction measurements to reveal that that the Cs atom rattles within its coordination polyhedron, causing the material’s thermodynamic instability. In the second part of my talk, I demonstrate the remarkable emergence of chirality in the self-assembled molecular material C60(SnI4)2, despite the very high icosahedral and tetrahedral symmetry of its constituent molecules. These results demonstrate that almost any molecular, nanocrystalline, or engineered precursor can be considered when designing chiral assemblies, allowing new classes of optical devices, asymmetric catalysts, and biological sensors to be imagined.

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