Andrew Streitwieser Lectureship: Crystalline Molecular Machines: Gearing Interactions by Mechanic and Dipolar Forces

Seminar | February 11 | 11 a.m.-12 p.m. | 120 Latimer Hall

 Miguel Garcia-Garibay, Department of Chemistry & Biochemistry, University of California, Los Angeles

 College of Chemistry

During the last few years we established the synthetic and analytic infrastructure required to develop a promising new class of materials that operate on the basis of their structurally programmed molecular motion. Having a combination of static and rapidly moving components, we refer to them as being amphidynamic. They can be crystalline or amorphous, and built with discrete molecular units, supramolecular complexes, polymers, extended solids based on metal-organic frameworks, and other platforms. The design of controlled molecular motion in the crystalline state relies on strategies that create free volume, take advantage of highly symmetric structures that display volume-conserving motion, or a more challenging approach based on correlated motions, which may be viewed as molecular gears. This presentation will illustrate the development of these concepts as a result of considering the relation between dynamics and order in condensed phase matter, their realization using several structural platforms, and the tools used to determine rotational dynamics that range from static to the limit of inertia.