Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MO: Fachverband Molekülphysik

MO 10: Cluster

MO 10.4: Vortrag

Dienstag, 15. März 2011, 11:15–11:30, MER 02

Infrared spectra and structures of silver-PAH cation complexes — •Marco Savoca¹, Torsten Wende², Ling Jiang², Judith Langer¹, Gerard Meijer², Otto Dopfer¹, and Knut Asmis² — ¹Optik und Atomare Physik, TU Berlin — ²Fritz-Haber-Institut, Berlin

Hybrids of metal and polycyclic aromatic hydrocarbons (PAHs) are promising building blocks for new materials with tailored opto-electronic properties. We report the first experimental mid-infrared spectra of Ag-PAH cation complexes measured in the linear absorption regime via messenger-tagging of the size-selected, cryogenically cooled complexes. The infrared photodissociation (IRPD) spectra of Ne-tagged Ag-PAH cation complexes (PAH=naphthalene-pyrene) are assigned on the basis of a comparison to simulated vibrational spectra from density functional calculations. The analysis of the IRPD spectra, which resolve IR bands as weak as a few km/mol, allows us to identify the Ag binding site and to gain valuable insight into the effects of Ag cation complexation on the geometry and charge distribution of the PAH.