Photocontrolling conformation: Towards smart receptors and catalysts

ORGN 49

Stefan Hecht, hecht@mpi-muelheim.mpg.de, Maike V. Peters, Ragnar S. Stoll, stoll@mpi-muelheim.mpg.de, and Anzar Khan. Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr, 45470, Germany
The creation of new “smart” materials, important for actuation, sensing, data storage, and computing devices, involves the design of responsive macro- and supramolecules. Light represents perhaps the most attractive external stimulus because it can be applied in a non-invasive fashion and with exquisite control over time and location of exposure. In this context, photochromic molecules are of great interest since geometrical and electronic changes upon switching can be used to affect structure and function from the molecular level up to the macroscopic size regime. Our research group has recently engaged in the design of photoswitchable foldamers that exhibit a light-triggered helix-coil transition. Since the foldamers can serve as dynamic hosts accompanying guest molecules in their interior, our design promises to lead to the development of “smart” delivery agents. In another area, we have been active to construct photoswitchable catalysts thereby enabling the remote control of chemical reactions.