Conductive hydrogels are promising materials in bioelectronics that ensure a tissue-like soft modulus and re-enact the electrophysiological function of M Sweater damaged tissues.However, recent approaches to fabricating conductive hydrogels have proved difficult: fixing of the conductive hydrogels on the target tissues hydrogels requires the aids from other medical glues because of their weak tissue-adhesiveness.In this study, an intrinsically conductive and tissue-adhesive granular hydrogel consisting of a PEDOT:PSS conducting polymer and an adhesive catechol-conjugated alginate polymer was fabricated via an electrohydrodynamic spraying method.
Because alginate-based polymers can be crosslinked by calcium ions, alginate-catechol polymers mixed with PEDOT:PSS Wigs granular hydrogels (ACP) were easily fabricated.The fabricated ACP exhibited not only adhesive and shear-thinning properties but also conductivity similar to that of muscle tissue.Additionally, the granular structure makes the hydrogel injectable through a syringe, enabling on-tissue printing.
This multifunctional granular hydrogel can be applied to soft and flexible electronics to connect humans and machines.