Environmentally friendly biomimetic materials with good deformability,high pressure-sensitive performance,and excellent biocompatibility are highly attractive for health monitoring,but to simultaneously meet these req...Environmentally friendly biomimetic materials with good deformability,high pressure-sensitive performance,and excellent biocompatibility are highly attractive for health monitoring,but to simultaneously meet these requirements is a formidable challenge.In this study,biocompatible MXene quantum dot(MQD)/watermelon peel(WMP)aerogels were obtained by immersing freeze-dried fresh watermelon peel into the quantum dot dispersion.The resulting bio-aerogels with a three-dimensional(3D)porous network structure exhibited a low in elasticity modulus(0.03 MPa)and limit of detection(0.4 Pa)and it showed biocompatibility.With a maximum pressure-sensitive response of 323 kPa^(-1),the 3D porous MQD/WMP aerogels exhibited good stability.In addition,the sensing signals could be displayed on mobile phones through a Bluetooth module to monitor human motion(pulse,sound,and walking)in real time.More importantly,the MQD/WMP aerogels exhibited excellent biocompatibility in a cytotoxicity test,thus decreasing the safety risk when they are applied to human skin.The finding in this study will facilitate the fabrication of high-performance biomimetic MXene active matrices,which are derived from natural biological materials,for flexible electronics.展开更多
基金This work was supported by the National Natural Science Foundation of China(Nos.62174152,61625404,and 61888102)Foshan Innovative and Entrepreneurial Research Team Program(No.2018IT100031).
文摘Environmentally friendly biomimetic materials with good deformability,high pressure-sensitive performance,and excellent biocompatibility are highly attractive for health monitoring,but to simultaneously meet these requirements is a formidable challenge.In this study,biocompatible MXene quantum dot(MQD)/watermelon peel(WMP)aerogels were obtained by immersing freeze-dried fresh watermelon peel into the quantum dot dispersion.The resulting bio-aerogels with a three-dimensional(3D)porous network structure exhibited a low in elasticity modulus(0.03 MPa)and limit of detection(0.4 Pa)and it showed biocompatibility.With a maximum pressure-sensitive response of 323 kPa^(-1),the 3D porous MQD/WMP aerogels exhibited good stability.In addition,the sensing signals could be displayed on mobile phones through a Bluetooth module to monitor human motion(pulse,sound,and walking)in real time.More importantly,the MQD/WMP aerogels exhibited excellent biocompatibility in a cytotoxicity test,thus decreasing the safety risk when they are applied to human skin.The finding in this study will facilitate the fabrication of high-performance biomimetic MXene active matrices,which are derived from natural biological materials,for flexible electronics.
