ICP Kolloquium: Sabine Ludwigs, 21. Januar 2021, „Bioinspired Multiresponsive Polymer Films“

January 21, 2021

Time: January 21, 2021
Download as iCal:

Prof. Dr. Sabine Ludwigs
Institut für Polymerchemie, Universität Stuttgart
Donnerstag, 21. Januar 2021, 16:00 Uhr
via zoom

 

Bioinspired Multiresponsive Polymer Films

Abstract:
The beauty and multifunctionality of nature has been a constant inspiration for materials scientists to mimic functionalities and hierarchical structures in man-made materials. Both, color and motion in plants are examples which can be - to some extent - replicated by stimuli-responsive polymers and materials thereof.
The field of expertise of my group are conducting polymers which are used in a number of polymer electronics devices, but also in electrochemical applications where electronic and ionic charge transport are intimately linked with each other. 1
Among various self-synthesized materials we study the commercially available blend poly(ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). Apart from its use as “synthetic metal” as
transparent flexible electrode, the material is a mixed conductor and also shows ionic conductivity as function of humidity
as we could recently elucidate. 2
The humidity dependence of the PSS polyelectrolyte phase together with the electroactive nature of the PEDOT can further be used to create multifunctional and multiresponsive materials, e.g. for humidity-triggered bilayer actuators. 3 Using simple analytical models allows to predict curvatures of such “intelligent” bilayer actuators.

1 M. Wieland, C. Malacrida, Q. Yu, C. Schlewitz, L. Scapinello, A. Penoni, S. Ludwigs, Conductance and Spectroscopic
Mapping of EDOT Polymer Films upon Electrochemical Doping, in „Focus on New Materials and Applications for
Organic Electrolyte Gated Transistors“, Flex. Print. Electron. 2020, 5, 014016.
2 M. Wieland, C. Dingler, R. Merkle, J. Maier, S. Ludwigs, Humidity-Controlled Water Uptake and Conductivities in Ion
and Electron Mixed Conducting Polythiophene Films, ACS Applied Materials & Interfaces, 2020, 12, 6742.
3 C. Dingler, H. Müller, M. Wieland, D. Fauser, H. Steeb, S. Ludwigs Understanding Mechanical Behavior to Curvature
Prediction of Humidity-Triggered Bilayer Actuators; Advanced Materials 2020, accepted.

List of all events


October 2022

July 2022

June 2022

May 2022

December 2021

November 2021

October 2021

July 2021

June 2021

May 2021

February 2021

January 2021

October 2020

September 2020

February 2020

To the top of the page