Flexible Polydopamine Bioelectronics

Abstract

Flexible bioelectronics have attracted increasing research interests due to their wide range of potential applications in human motion detection, personal healthcare monitoring, and medical diagnosis. Recently, design and fabrication strategies integrated with mussel-inspired polydopamine (PDA) have demonstrated many appealing properties, which meet the structural and functional requirements of high-performance flexible bioelectronics. The inherent multiple reactive sites and hierarchical interactions within PDA can promote the total electrochemical activities, self-healing, surface activation, and biocompatibility of the composite system. This review paper strives to provide a comprehensive overview on this emerging area, including the fabrication methodology, the structural and functional contributions of PDA on the whole composites, and various applications of PDA-based flexible bioelectronics. The current challenges and future outlook in this field are also extensively discussed at the end. This paper aims to serve as a guideline in this emerging area and provide new inspirations toward next-generation integrated multifunctional flexible PDA bioelectronics with a broad range of healthcare applications.

Layer‐by‐Layer Assembled Smart Antibacterial Coatings via Mussel‐Inspired Polymerization and Dynamic Covalent Chemistry

“…[19][20][21][22][23][24] Additionally, 5, 6-dihydroxyindole (DHI), a typical monomer of natural and synthetic melanins, has also been recognized as one of the most promising candidates for surface-independent smart coating materials using the musselinspired chemistry. [25][26][27][28][29][30][31][32] All those recent achievements inspired the further development of facile LBL fabrication strategies toward the robust and universal antibacterial coating materials by using natural building blocks and readily available chemistries.…”

Ultralight, Ultraflexible, Anisotropic, Highly Thermally Conductive Graphene Aerogel Films

“…Graphene, a monolayer of sp 2 bonded two-dimensional (2D) carbon atoms, has gained attention over recent years [1]. The 3D graphene architectures of aerogels, foams, and sponges hold the advantages of low density, high porosity, high specific surface area, and stable mechanical properties [2][3][4][5]. Compared with conventional aerogels, anisotropic GAs have a higher degree of controllability in microstructure with direction-dependent functions.…”

Self-Healing Behavior of Polymer/Protein Hybrid Hydrogels

“…The strategies for achieving the self-healing characteristics and formulating smart materials for diverse applications are continuously developed; some challenges and future outlooks were discussed recently in comprehensive reviews [ 14 , 27 , 42 , 43 , 69 , 70 , 71 , 72 , 73 ]. The present paper joins the recent efforts undertaken to design self-healing hydrogels and hybrid materials [ 6 , 7 , 14 , 27 , 29 , 30 , 31 , 37 , 53 , 74 ] with unique and targeted properties, based on synergism, by using accessible methods, without altering the functionality and structural integrity of the components.…”