Fig. 1. Fabrication of self-adhesive conductive polymers (SACPs) with supramolecular solvent-doped PEDOT: PSS composites and demonstration of their key features.
a Schematic illustration of the fabrication, molecular structures, and interactions of the SACPs, including chemical structures of PEDOT, PSS, citric acid (H3Cit), poly (vinyl alcohol) (PVA), glutaraldehyde (GA), and β-cyclodextrin (β-CD), and the involved interactions enabled by covalently crosslinked elastic networks, electrostatic interaction, and supramolecular solvents. b Images of the aqueous SACP ink, droplets on PI (CA 65.9o) and PTFE (CA 99.8o) substrates, and the drying process of a droplet on PI substrate. No coffee ring effect is observed during the drying process. c Soft and strong adhesion by SACPs: images showing the pulling of a plastic box loading with a 0.5 kg weight (left) and the lifting of a 5 kg water bottle (right) via the SACP-based adhesives. d Large-scale application of the SACPs: images of a roll of SACP-coated PET tapes (top) and an A4 SACP-coated PET sheet (20 × 25 cm) (bottom).