首页|Synergistic Charge Percolation in Conducting Polymers Enables High-Performance In Vivo Sensing of Neurochemical and Neuroelectrical Signals
Synergistic Charge Percolation in Conducting Polymers Enables High-Performance In Vivo Sensing of Neurochemical and Neuroelectrical Signals
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Challenges remain in establishing a universal method to precisely tune electrochemical properties of conducting polymers for multifunctional neurosensing with high selectivity and sensitivity. Here, we demonstrate a facile and general approach to achieving synergistic charge percolation in conducting polymers (i.e., poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate), PEDOT:PSS) by incorporating conductive catalysts (i.e., carbon nanotubes, CNTs) and post-processing. The approach shows synergistic effects: (i) CNTs and post-processing together promote PEDOT ordered interconnection for highly efficient charge percolation that accelerates electrochemical kinetics; (ii) CNTs catalyze the electrooxidation of vitamin C for selective electrochemical sensing; (iii) CNTs enhance the charge storage/injection capacity of PEDOT:PSS. The prepared CNT-PEDOT:PSS fiber mechanically matches with neural tissues and is proved to be a biocompatible versatile microsensor capable of high-performance neurosensing in vivo.
Charge PercolationConducting PolymersIn Vivo ElectrochemistryMicrosensorsNeuroscience
Tianci Xu、Wenliang Ji、Yue Zhang
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Department of Chemistry, Renmin University of China Beijing 100872 (China)
College of Chemistry, Beijing Normal University Beijing 100875 (China)
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