From DNA-Organized Multichromophores to Supramolecular Materials

Vous êtes cordialement invités au séminaire de Robert HÄNER, Department of Chemistry and Biochemistry, University of Bern, Switzerland, organisé par l'Institut Charles Sadron.

Résumé :
The proper arrangement of multiple chromophores may lead to arrays with electronic properties
that are largely different from the ones of the individual molecules. The bottom-up construction
of structurally well-organized chromophore assemblies is a challenge with far-reaching
implications in many scientific areas. Over many years, we have explored the assembly of
multichromophores by using the DNA duplex as a supramolecular scaffold. The insight gained
from DNA-based model studies led to the development of short amphiphilic oligomers, which are
structurally related to DNA. Oligo-chromophores prepared from simplified versions of the natural
DNA building blocks form supramolecular aggregates via self-assembly processes in aqueous
medium. Morphological and electronic aspects of the obtained polymers as well as their
elaboration into artificial light-harvesting complexes will be presented.

Les personnes souhaitant rencontrer Robert Häner sont priées de prendre contact avec Jean-François
Lutz (tel. 03 88 41 40 16 ou mail : jean-francois.lutz@ics-cnrs.unistra.fr)