Synergetic effect of the polymer electrolytes electrochemical doping and long-range charge transport in solution-processed hybrid chemiresistors for discriminating NO<sub>2</sub>
발표자
()
초록
내용
Electrochemical doping of solution-processed conjugated polymer (CPs) with solid-state ionic liquids (SIL) has the potential to be the main technology part of chemiresistors. However, the signal-to-noise (SNR) affects sensitivity and the improvement of commercialization. Herein, we report a highly sensitive and flexible nitrogen dioxide chemiresistor utilizing the synergetic effects both of SIL and MXene. The results show that SIL is electrochemically doped in the CPs, while MXene provides a long-range charge transport pathway, enabling the device operation under low bias conditions. It's worth noting that after nitrogen dioxide exposure, nitrate anions can selectively and sensitively enhance further electrochemical doping in the hybrid chemiresistor. In consequence, the hybrid chemiresistor exhibits excellent sensing capabilities, including outstanding sensitivity and low detection limit. Because of those effects, our approach shows potential in emerging sensing technologies.