Dresden 2017 – wissenschaftliches Programm
CPP 41.11: Vortrag
Mittwoch, 22. März 2017, 18:00–18:15, ZEU 260
Bicontinuous Morphologies in Ternary Blends of Molecular Glasses — •Michael Grimann, Evgeny Tatarov, and Thomas Fuhrmann-Lieker — University of Kassel, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology, 34109 Kassel, Germany
We demonstrate nanoscale phase separated morphologies in organic functional materials. These glassy compounds comprise structural motifs known from OLED or organic laser materials like oligophenyls and triarylamines as electron donors. We developed electron acceptors containing perfluorinated aromatic moieties which lead to a miscibility gap with the respective donors. Binary blends thereof undergo phase separation via spinodal decomposition in equichoric compositions. Kinetics of this demixing process can be significantly slowed by addition of especially designed surfactant-like bipolar materials. The resulting bicontinuous morphologies of tuneable scale are useful for future random lasing and photovoltaic applications.