Event Information
Rational Design in Mechanochemical Systems: Toward Applications in Stress-Responsive Materials and Catalysis
- Abstract:
Mechanochemical reactivity can be leveraged for use in both materials science and organic synthesis. Force has the potential to elicit constructive chemistry leading to local stress relief and bond formation. Here we describe the design, synthesis, and mechanical activation of a mechanophore based on a bicycloheptane fused ring system. The mechanophore was designed to exhibit large elongations and generate reactive functionality upon mechanochemical activation. We then describe the synthesis of high mechanophore content ABA triblock copolymers with a focus on the creation of functional materials based on the BCH platform. Mechanical force can also be used to elicit subtler, reversible changes in the equilibrium geometry of polymeric systems. In catalytic systems, small perturbations in structure can cause large changes in selectivity. In part II, we describe a polymer tethered asymmetric catalyst, and efforts to use mechanical force to alter ligand geometry and thus stereoselectivity. If our efforts are successful, it will provide a platform to interface with chemical processes in real time using mechanical force.
Preliminary Examination Seminar
Student Exams Seminar