Dresden 2017 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 50: Poster: Organic Electronics and Photovoltaics, Molecular Excitations
CPP 50.4: Poster
Mittwoch, 22. März 2017, 18:30–21:00, P3
Thin Films of Imidazo[1,5-a]pyridines as Building Blocks of New Electro-Optic Devices — •Georg Albrecht1,3, Jasmin Martha Herr2,3, Frieder Müntze1,3, Richard Göttlich2,3, and Derck Schlettwein1,3 — 1Justus-Liebig-University Giessen, Institute of Applied Physics — 2Justus-Liebig-University Giessen, Institute of Organic Chemistry — 3Justus-Liebig-University Giessen, Laboratory for Materials Science (LaMa)
Imidazo[1,5-a]pyridines display blue photoluminescence, tunable by introducing functional groups, and can be used as ligands to form coordination complexes. The goal of this work is the preparation and electro-optical characterization of imidazo[1,5-a]pyridine thin films as a prerequisite to their further investigation as stable blue-light emitting building blocks for OLEDs. Suitable candidates for thin film preparation were chosen among 1,3-disubstituted imidazo[1,5-a]pyridines and deposited by spin-coating and physical vapor deposition. The optical absorbance of the samples was measured during film growth or subsequent to preparation by UV-Vis spectroscopy and morphological information was obtained by atomic force microscopy. The stability of samples was studied by storing the thin films either in the dark or under illumination and subsequent measurements of optical absorption. Cyclic voltammetry was used to obtain the redox potentials.