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  • Writer's pictureVerena Hauer

A recent publication from LiST

Updated: Mar 28

Dr. Juan Allegretto from the Laboratory for Life Sciences Technology - LiST-, in collaboration with the Soft Matter Laboratory from Argentina, has published a study titled " Empowering Bioelectronics with Supramolecular Nanoarchitectonics: PEDOT-Based Organic Electrochemical Transistors with Tunable Electronic Properties" in the journal ACS Applied Electronic Materials.

This manuscript explores a supramolecular approach for facile fabrication of organic electrochemical transistors (OECTs) using a layer-by-layer self-assembly technique. Utilizing poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), PEDOT:PSS, integrated with cationic molecular blocks, namely cetyltrimethylammonium bromide (CTAB) or poly(diallyldimethylammonium chloride) (PDADMAC), nanometric precision transistor channels were created. The PEDOT:PSS/CTAB system exhibited significantly enhanced electrical conductivity (275 S m–1) compared to PDADMAC integration (0.0531 S m–1). Tunable electronic performance indicators of OECTs and improved cycling stability were achieved through thickness adjustments and protective coating. The demonstrated OECTs exhibited comparable or superior performance to counterparts using more complex and costly fabrication techniques, showcasing their potential in biosensing dopamine with exceptional sensitivity.

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