Jump to main content
Jump to site search

Issue 23, 2016
Previous Article Next Article

Wettability of PEDOT:PSS films

Author affiliations


Conducting polymers such as poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) are increasingly used to interface electronics with biology. Their wettability, however, remains poorly understood. We show that the frequently-used sessile drop technique yields results that are strongly dependent on the experimental conditions (measurement duration and relative humidity), due to the hydrogel-like behavior of PEDOT:PSS. In contrast, the captive bubble technique on a fully wet film overcomes these limitations. Dynamic wettability measurements provide hysteresis values for this polymer and clarify the physical meaning of the static contact angles measured by sessile drop and captive bubble. Finally we show that aging the films in water leads to loss of PSS chains which makes the films more hydrophobic. The addition of a crosslinker reduces and slows down these effects.

Graphical abstract: Wettability of PEDOT:PSS films

Back to tab navigation

Supplementary files

Article information

09 Mar 2016
03 May 2016
First published
03 May 2016

Soft Matter, 2016,12, 5146-5153
Article type

Wettability of PEDOT:PSS films

C. Duc, A. Vlandas, G. G. Malliaras and V. Senez, Soft Matter, 2016, 12, 5146
DOI: 10.1039/C6SM00599C

Social activity

Search articles by author