Berlin 2018 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 70: Crystallization, Nucleation and Self-Assembly II

CPP 70.8: Vortrag

Donnerstag, 15. März 2018, 17:15–17:30, C 230

Tracking the reaction and film formation dynamics during in situ polymerization of polythiophene thin films — •Jenny Lebert¹, Eva Maria Kratzer¹, Stephan Pröller¹, Oliver Filonik¹, Philippe Fontaine², and Eva M. Herzig³ — ¹TU München, Munich School of Engineering, Herzig Group, 85748 Garching, Germany — ²Synchrotron SOLEIL, 91192 Saint Aubin, France — ³Universität Bayreuth, Physikalisches Institut, Herzig Group - Dynamik und Strukturbildung, 95440 Bayreuth, Germany

Native polythiophene belongs to the class of conjugated, semiconducting polymers which become conductive upon doping and therefore offer a broad range of potential applications in organic electronics. While polythiophene itself is insoluble, it is possible to obtain solution-processed thin films by employing an in situ polymerization technique.

Here, we present an experimental approach of tracking both, the reaction kinetics and film formation dynamics at the same time during the film formation employing simultaneous time-resolved UV/Vis transmission spectroscopy and grazing incidence wide angle X-ray scattering (GIWAXS). With this approach, we are able to characterize the intrinsic film formation phases. This allows us to suggest which processing parameters should be adapted in order to further improve the final film characteristics.