Dresden 2026 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster I
CPP 17.11: Poster
Montag, 9. März 2026, 19:00–21:00, P5
Comparative Analysis of Excited-State Dynamics in Thiophene based D-A-Polymers — Tobias Reiker1, Marek K Charyton2, Liu Zitong3, Deqing Zhang3, Nicolas D. Boscher2, and •Helmut Zacharias1 — 1Center for Soft Nanoscience, University of Münster, Germany — 2Materials Research and Technology Department, Luxembourg Institute of Science and Technology, Esch-sur-Alzette, Luxembourg — 3Institute of Chemistry, Chinese Academy of Science, Beijing, China
We investigate the excited state dynamics of conjugated thiophen based polymers using several kinetic models commonly discussed in the literature. These models describe scenarios in which a short lived excited state acts as a precursor for one or more long lived states and are formulated through coupled rate equations. Four representative models were fitted to the dynamics of DPP4T-1 and subsequently applied to pDPP4T, DPP DTT, pF8T2 and pTDPP to identify trends linked to structural variations within the polymer series. This analysis provides a coherent framework for comparing relaxation pathways and for assessing how precursor states influence the formation of long lived excited state populations.
Keywords: Donor-Acceptor-Polymers; time-resolved; tr-2ppe; Photoelectronspectroscopy; Ultrafast Dynamics