Transparent, Adhesive, and Conductive Hydrogel for Soft Bioelectronics Based on Light-Transmitting Polydopamine-Doped Polypyrrole Nanofibrils

• DOI: 10.1021/acs.chemmater.8b01446
• Publication Date: 2018-07-23T18:54:21Z
• Authors: Lu Han; Liwei Yan; Menghao Wang; Kefeng Wang; Liming Fang; Jie Zhou; Ju Fang; Fuzeng Ren; Xiong Lu
• Keywords: Polypyrrole; Bioelectronics

Conductive hydrogels are promising materials for soft electronic devices. To satisfy the diverse requirement of bioelectronic devices, especially those human–machine interfaces, required to be transparent, conductive, highly stretchable, and skin-adhesive. However, fabrication a conductive-polymer-incorporated hydrogel with high performance is challenge because hydrophobic nature conductive polymers making processing difficult. Here, we report self-adhesive by in situ formation polydopamine (PDA)-doped polypyrrole (PPy) nanofibrils polymer network. The formed good hydrophilicity were well-integrated hydrophilic phase interwoven into nanomesh, which created complete path allowed visible light pass through transparency. Catechol groups from PDA–PPy imparted self-adhesiveness. Reinforcement made tough stretchable. proposed simple smart strategy nanofillers opens new route incorporate undissolvable hydrogels. fabricated multifunctional shows promise range applications, such as transparent skins, wound dressings, bioelectrodes see-through body-adhered signal detection.