Regensburg 2016 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 30: Poster: Organic Electronics and Photovoltaics

CPP 30.33: Poster

Dienstag, 8. März 2016, 18:15–21:00, Poster B2

Ion sensing with electrochemical gated organic field effect transistors based on diketopyrrolopyrrole polymers — •Benno Buchinger, Sven Hüttner, Anna Gräser, and Fabian Hoffmann — Universität Bayreuth, Organic and Hybrid Electronics, MC I

Since conjugated polymers have the potential for biosensor applications we investigated the possibility of building electrochemical and bottom gated organic field effect transistors for sensing applications using different conjugated polymers based on DPP (Diketopyrrolopyrrole) derivatives as active material. DPP polymers are a promising type of polymers as they allow a high tenability between high electron and hole transport with high charge carrier mobilities as well as a high stability in ambient and aqueous environments. Ions can either interact with the surface of the polymer layer or diffuse into the bulk and interact with functional corresponding hydrophilic groups, inducing changes in the electronic properties. This work addresses the feasibility to use these polymers for sensing applications, i.e. detect different ions and ion concentrations in aqueous environments important for a row of bio-sensing applications.