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DS: Fachverband Dünne Schichten
DS 39: Poster Session II
DS 39.11: Poster
Thursday, March 19, 2015, 16:00–18:30, Poster F
The adsorption and DBD-plasma-polymerization of thiophene on titania — •Sebastian Dahle1,2, Maria Sonnenberg2, Marcel Marschewski2, Eike Hübner3, and Wolfgang Maus-Friedrichs1,2 — 1Clausthaler Zentrum für Materialtechnik, Technische Universität Clausthal, Agricolastraße 2, D-38678 Clausthal-Zellerfeld, Germany — 2Institut für Energieforschung und Physikalische Technologien, Technische Universität Clausthal, Leibnizstraße 4, D-38678 Clausthal-Zellerfeld, Germany — 3Institut für Organische Chemie, Technische Universität Clausthal, Leibnizstraße 6, D-38678 Clausthal-Zellerfeld, Germany
The adsorption of thiophene from the gas phase onto clean and oxidized titanium foils as well as onto perchloric acid or bromine pretreated titanium foils did not yield any chemical interaction or even stable adsorption. Especially the oxidative polymerization as classical approach for the synthesis and deposition of polythiophene cannot be employed for titania substrates. Using a dielectric barrier discharge plasma during the thiophene gas dosage results in the deposition of plasma-polymerized thiophene films at quite large deposition rates. The deposition mode, however, changes from a Frank-van-der-Merwe-type growth within the first seconds towards the deposition of two different classes of particles presumably originating from gas phase agglomeration.