Regensburg 2016 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 20: Focus: Functional Polymer Hybrids I

CPP 20.1: Hauptvortrag

Dienstag, 8. März 2016, 09:30–10:00, H51

Photoinduced Surface Patterning in Azo-Polymers: How Can Supramolecular Functionalization Strategies Serve Us? — •Arri Priimägi — Department of Chemistry and Bioengineering, Tampere University of Technology, Finland

The light-induced surface patterning in azobenzene-containing materials is a good example of the photomechanical power of azobenzene, the isomerization of which can actuate macroscopic motions into the material system it is incorporated into. The surface deformation can be very pronounced, and a great deal of research effort is being put into gaining fundamental understanding on the light-induced motions as well as into the use of the photoinduced surface patterns in applications in photonics and nanofabrication.

Supramolecular functionalization strategies, i.e., the use of non-covalent intermolecular interactions to attach azobenzenes into passive host matrices, are pertinent from both fundamental and applied perspectives. In particular, supramolecular interactions provide a platform to experimentally study the structure-function relationships that govern the surface patterning and the limits beyond which the process does not occur anymore. Even weak interactions make a large difference, and not only the strength but also the directionality of the noncovalent interaction must be considered when designing supramolecular materials that move efficiently in response to light.