Berlin 2001 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 16: Poster: Dynamics of Molecular Systems, Polymer Dynamics, Glass Transition, Crystallization, Electronic Properties of Polymers
CPP 16.30: Poster
Montag, 2. April 2001, 12:30–15:00, AT1
Excited States of Ladder-type Poly-p-phenylene Oligomers — •Jörg Rissler1, Heinz Bässler1, Florian Gebhard2, and Peter Schwerdtfeger3 — 1Institut für Physikalische, Kern- und Makromolekulare Chemie, Philipps-Universität Marburg, Hans-Meerweinstr., 35032 Marburg — 2Fachbereich Physik, Philipps-Universität Marburg, Renthof 6, 35032 Marburg — 3Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand
A new, universally valid scheme to interpret excited states is developed which probes the excitonic nature of such states.
The scheme is applied to excited states of ladder-type paraphenylene oligomers which have been calculated along with their ground state properties with semiempirical methods The oligomers comprised up to eleven phenylene rings.
All optical relevant states can be interpreted as bound electron-hole pairs. The electron-hole pair with the lowest energy has a mean distance of approximately 4 Å.