Brainfood @ Noon: Die JCF Lunchtalks

Scientific Exchange at lunchtime on every first friday of the month!

Our next Lunchtalk Sessions, always from 12 - 13 PM:

and many more to come!

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Next Session

Photophysics@Noon

This November we are collaborating with the German Bunsen Society and the young physical chemists.

Date: 05 December 2025

Time: 12 PM

Via Zoom: https://zoom.us/j/94769627783?pwd=QGTzlSdVZeD89gbKqi7VvB5CB4R1XA.1

Abha Valavalkar, Friedrich Schiller University Jena

"Photophysics of biologically relevant molecules"

Biologically relevant chromophores are ubiquitously employed in sensing, imaging, and therapy. Certain organic fluorophores as well as metal coordinated compounds exhibit photobiological activity due to their tunable excited state and electron or energy transfer processes.
While the target site of application for these functional molecules is the human body, there exists a gap in current state of the art, in elucidating the photophysical processes that they undergo in biologically relevant surrounding. A step in this direction is to measure the photophysical properties of these dyes and relevant functional molecules in 2D cell layers. Previous works in the group address these concerns for fluorophores, and for photosensitisers in live human cancer cells.
In this work, “dark” but “loud” photoacoustic agents were measured in cellulo, thus obtaining temporal environment specific information for non-emissive molecules. The outlook is to use transient absorption microscopy to probe the spatial information about the localisation of these molecules, which will complement the kinetic data. 

Thanks to our previous speakers!

07 November 2025: Macromolecular Chemistry

Anna-Lisa Poser (Fraunhofer Institute for Applied Polymer Research IAP // University of Potsdam)

"The Shape Memory Effect in Polyurethane Foams"

07 October 2025: Electrochemistry 

Franziska Kühling (Carl von Ossietzky Universität Oldenburg)

"New Insights on the Fundamentals of Bipolar Electrochemistry"

Alena Neudert (Universität Bayreuth) 

"Hybrid all-Fe Redox Flow Battery: Coupling Theory and Experiment"