Time-resolved 2D-IR-spectroscopy at adsorbate layers (C04)

• Subject Area: Physical Chemistry of Solids and Surfaces, Material Characterisation
• Term: from 2016 to 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 278162697

The temporal evolution in selectively vibrationally excited adsorbat monolayers is studied using time and frequency resolved pump-probe-spectroscopy. This allows us to directly observe the chain of modes and their branching which are populated with evolving time. This approach provides detailed insights into the coupling of vibrational modes. Studies with alkyl- and polyen-molecules of different lengths allow us to observe the propagation of the excess energy along the chains. Langmuir-Blodget films of different packing density detail the influence of intermolecular interactions on the vibrational dynamics.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1242: Non-equilibrium dynamics of condensed matter in the time domain
• Applicant Institution: Universität Duisburg-Essen
• Project Head: Professor Dr. Eckart Hasselbrink