Physical Chemistry II

Founding director of
Cluster of Excellence

Director of ZEMOS
Research Ecosystem
with Core Facilities

Director of UA Ruhr
Research Center Chemical
Sciences and Sustainability

Main Research Thrusts
Terahertz (THz) Spectroscopy

In the liquid phase, water molecules are connected to one another via hydrogen bonds. Fluctuations in the water network occur on the sub-ps and ps timescale. THz absorption measurements (1 THz = 1012 Hz = 1 ps-1) "see" these dynamic reorientations of dipole moments. This makes THz spectroscopy a sensitive tool to probe solute-induced changes in the collective water network motions.

High-resolution infrared spectroscopy

Ultracold Chemistry: How do molecules aggregate at ultracold temperatures?
Do chemical reactions exist at temperatures barely above absolute zero?
Microsolvation: How many water molecules are necessary to separate ion pairs in acids?