Polyethylene glycol

Engineering

Conductive polymer

Materials science

Elongation

Ultimate tensile strength

PEG ratio

Bioelectronics

Economics

Self-healing

Chemical engineering

Biosensor

Polymer

Alternative medicine

Nanotechnology

PEDOT:PSS

Composite material

Self-healing material

Medicine

Finance

Polystyrene sulfonate

Pathology

Advanced Functional Materials

Self‐healing electronic materials are of primary interest for bioelectronics and sustainable electronics. In this work, autonomic self‐healing of films obtained from mixtures of the conducting polymer poly(3,4‐ethylenedioxythiophene) doped with polystyrene sulfonate (PEDOT:PSS) and polyethylene glycol (PEG) is reported. The presence of PEG in PEDOT:PSS films decreases the elastic modulus and increases the elongation at break, thus leading to a softer material with enhanced self‐healing characteristics. In situ imaging of the cutting/healing process shows that the healing mechanism is likely due to flowing back of the material to the damaged area right after the cutting.

Autonomic Self‐Healing of PEDOT:PSS Achieved Via Polyethylene Glycol Addition