Regensburg 2025 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 15: Poster Session I
CPP 15.4: Poster
Montag, 17. März 2025, 19:00–21:00, P4
Optical properties of diamondoid organotin sulfur clusters with fluorescent ligands — •Alexander Schauerte1, Jie Wang2, Felix Thomas1, Irán Rojas León2, Stefanie Dehnen2, and Marina Gerhard1 — 1Faculty of Physics and Material Sciences Center, Philipps-University of Marburg, Renthof 7a, D-35032 Marburg, Germany — 2Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
White light is important in our daily life as well as in technology and
research. It has been shown that diamondoid organotin clusters with
organic ligands emit a brilliant white light beam when pumped with
an infrared laser.
We investigate the fluorescent properties of tin-sulfur/selenium
clusters with three phenyl- and one tetraphenylethylene ligands
using photoluminescence- and spatially resolved photoluminescenceexcitation-
spectroscopy. Through temperature-dependent measurements
of compounds prepared as glass and as powder, we conclude
that the electron-phonon-coupling and short-range ordering seems to
be reduced in a glass state compared to a powder.
Furthermore, we investigate the white light generation (WLG) and
second harmonic generation of different cluster compounds, which
show a dependence of the WLG-efficiency on the chemical composition.
The glass has a lower excitation power threshold for WLG than
the powder.
Keywords: White Light Generation; Fluorescence; PLE; SHG