Biodegradable Transparent Substrate Based on Edible Starch–Chitosan Embedded with Nature-Inspired Three-Dimensionally Interconnected Conductive Nanocomposites for Wearable Green Electronics

• DOI: 10.1021/acsami.8b04291
• Publication Date: 2018-06-15T09:24:15Z
• Authors: Jinlei Miao; Haihui Liu; Yongbing Li; Xingxiang Zhang
• Keywords: Bioelectronics; Organic Electronics

Electronic waste (E-waste) contain large environmental contaminants such as toxic heavy metals and hazardous chemicals. These would migrate into drinking water or food chains pose a serious threat to environment human health. Biodegradable green electronics has great potential address the issue of E-waste. Here, we report on novel biodegradable flexible transparent electrode, integrating three-dimensionally (3D) interconnected conductive nanocomposites edible starch–chitosan-based substrates. Starch chitosan are extracted from abundant inexpensive potato crab shells, respectively. Nacre-inspired interface designs introduced construct 3D single wall carbon nanotube (SCNT)–pristine graphene (PG)-conductive polymer network architecture. The inorganic one-dimensional SCNT two-dimensional PG sheets tightly cross-linked together at junction by long organic poly(3,4-ethylenedioxythiophene) (PEDOT) chains. formation continuous SCNT–PG–PEDOT leads not only low sheet resistance but also superior flexibility. electrode possesses an excellent optoelectronic performance: typically, 46 Ω/sq with transmittance 83.5% typical wavelength 550 nm. slightly increased less than 3% even after hundreds bending cycles. lightweight biocompatible could conform skin topography any other arbitrary surface naturally. starch–chitosan substrate-based electrodes be biodegraded in lysozyme solution rapidly room temperature without producing residues. can recycled via membrane process for further fabrication reinforcement composites. This high-performance is promising material next-generation wearable optoelectronics, transient electronics, electronics.