The 16th Femtochemistry Conference (FEMTO16)

Session

Session 13 - Materials I

13

Jun 26, 2025, 2:10 PM

Savoia Hotel, Trieste, Italy

23. Ultrafast dynamics of colloidal plexcitonic nanohybrids studied by 2D electronic spectroscopy

elisabetta collini (Università di Padova)

6/26/25, 2:10 PM

Invited talk

The burgeoning field of polaritonic chemistry explores the interaction between molecules and confined electromagnetic field modes, enabling new chemical reactivities. Colloidal plexcitonic materials are particularly promising due to their easy and cost-effective preparation. Plexcitons are hybrid states resulting from the combination of plasmon resonances of metal nanostructures with molecular...

6. Probing Surface and Interface Carrier Dynamics via Ultrafast Scanning Electron Microscopy

Lijie Wang (KAUST)

6/26/25, 2:40 PM

Contributed talk

Abstract
Conventional photon-pump/photon-probe time-resolved techniques face inherent limitations in resolving the intricate surface and interface carrier dynamics due to constraints in spatial resolution and penetration depth. To address these challenges, we utilize scanning ultrafast electron microscopy (SUEM), a state-of-the-art technique that integrates femtosecond temporal resolution...

13. Dynamic control of electron correlations in photodoped charge-transfer insulators

Dr Thomas C. Rossi (Helmholtz Zentrum Berlin für Materialien und Energie)

6/26/25, 3:00 PM

Contributed talk

The electronic properties of correlated insulators are governed by the strength of Coulomb interactions, enabling the control of electronic conductivity with external stimuli. In this talk, I will highlight that the strength of electronic correlations in nickel oxide (NiO) can be coherently reduced by tuning the intensity of an optical pulse excitation above the charge-transfer gap....

178. Excitation Energy Transfer and Diffusion in Synthetic Light-Harvesting Nanoparticles

Jérémie Léonard (Université de Strasbourg & CNRS, IPCMS, UMR 7504, F-67200 Strasbourg, France.)

6/26/25, 3:20 PM

Contributed talk

We investigate electronic excitation energy transport within 40-nm organic nanoparticles (ONPs) loaded with cationic rhodamine dyes (R18). Bulky counterions act as spacers which prevent dyes aggregation and quenching, up to dye concentrations as large a 300 mM - i.e. ~1 nm inter-dye distance - and similar to the effective dye concentration in natural, photosynthetic light-harvesting antennas....