Regensburg 2019 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 17: Poster Session I

CPP 17.24: Poster

Montag, 1. April 2019, 17:30–19:30, Poster B1

Electrically conductive multilayer films created from carbon nanotubes and polyelectrolytes — •Sven Neuber, Annekatrin Sill, Heiko Ahrens, and Christiane A. Helm — Institute of Physics, University of Greifswald, 17489 Greifswald, Germany

Films built from polyelectrolytes PSS, PDADMAC in 0.1 Mol/L NaCl and carbon nanotubes are investigated. Multilayer built-up was carried out by sequential adsorption of oppositely charged polyelectrolytes. Carbon nanotubes were modified with a volume/volume acid mixture (HNO3 (60-68%) and H2SO4 (98%)) to make them water soluble and negatively charged. AFM-images revealed a horizontal orientation of carbon nanotubes on the surface of the multialyer. Also, UV-vis, QCM and ellipsometry measurements were used to determinate surface coverage and thickness on nm-scale. Sheet resistance decreases monotonously with the number of carbon nanotube layers. Choosing the multilayer architectures allows to tune its sheet.