CHEN Fubin,LI Zhaoxian,XIE Zhuang.Spray-printed PEDOT:PSS/carbon nanotube flexible microelectrodes for electrochemical sensing[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2023,62(02):66-72.
Flexible composite microelectrodes were prepared using poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT:PSS) conductive polymer and multi-walled carbon nanotubes (MWCNTs) in combination with bis-trifluoromethanesulfonic acid lithium amide (LiTFSI) doping. A facile spray printing technique was developed to pattern the PEDOT:PSS/MWCNTs composite electrodes with high conductivity and excellent flexibility, which can be generated on various substrates. The study found that, based on the optimization of the spray conditions, the high current response and stable thin-film electrochemical sensing electrodes can be realized. And flexible electrochemical sensor was established to detect hydrogen peroxide and dopamine in the buffer solution at concentrations ranging from 1 μmol/L to 500 μmol/L. Such flexible electrodes are expected to be further applied in the fields of wearable electronics and monitoring of biochemical signals.
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