In this contribution, we will present different spectroscopic methods used to investigate organic mixed ionic-electronic conductors (OMIECs) which constitute a promising material class for interfacing biological systems with electronics. Organic electrochemical transistors (OECTs) are a solution for this task and are often used to benchmark OMIECs performance. Different studies have showed that polymers designed with hydrophilic solubilizing chains show better OECT performance, mostly due to their higher ionic uptake and stability in aqueous environments. We explore how side chain engineering in poly(3-hexylthiophene) (P3HT) with different content of TriEthylene Glycol (TEG) impacts its electronic and ionic transport properties.
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Réhault et al. (2024) studied this question.
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