Institute of Solid State Physics


SS22WS22SS23WS23SS24WS24      Guidelines for Master Students

Determination of the self-assembled supermolecular structure of perylene bisimide and oxygenic polyoxometalates
M. Burian
Institute of Inorganic Chemistry, Graz University of Technology
15:00 - 17:00 Monday 28 September 2015 Foyer Alte Technik

Upon addition of perylene bisimide (PBI2+) to ruthenium polyoxometalate (RuPOM) in aqueous solution a spontaneous self-assembly into a nano-scaffold occurs. In both TEM and SEM images of the hybrid material various morphologies were observed from which no detailed information on the intermolecular structure could be gained. Subsequent solution SAXS measurements reveal the formation of plate-like superstructures in the nanometer regime where a disordered lateral arrangement of the molecules is suggested. The detailed formation under various conditions will be shown point out a link between the precursors’ structure and the final hybrid material aggregate. Dynamic “Stopped-Flow” experiments enable insight into the self-assembly process and allow to derive a full structural model of the hybrid material. AFM measurements confirmed the predicted nano-plate morphology as building blocks with potential application as photocatalysts.