Author(s): Sun, JZ (Sun, Jinzi); Du, H (Du, Hui); Chen, ZJ (Chen, Zhaojun); Wang, LL (Wang, Lili); Shen, GZ (Shen, Guozhen)

Source: NANO RESEARCH DOI: 10.1007/s12274-021-3967-x Early Access Date: NOV 2021

Abstract: 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.

Accession Number: WOS:000722133100001

ISSN: 1998-0124

eISSN: 1998-0000

Full Text: https://link.springer.com/article/10.1007%2Fs12274-021-3967-x