Graphene Quantum Dot‐Doped PEDOT for Simultaneous Determination of Ascorbic Acid, Dopamine, and Uric Acid

Invited for this issue's Front Cover is the group of Prof. Dr. Tae Hyun Kim from Soonchunhyang University (South Korea). The cover picture illustrates poly(3,4‐ethylenedioxythiophene) (PEDOT) electrodeposited thin films (PEDOT‐GQD) doped with graphene quantum dots (GQD) as an electrode active material that has a high electrochemically active area and interfacial electron transport rate. As a result, PEDOT‐GQD will simultaneously detect ascorbic acid, dopamine, and uric acid with high selectivity and high sensitivity. Read the full text of the Research Article at 10.1002/celc.202200557. “An electrode active material with high sensitivity and selectivity that can simultaneously determine ascorbic acid, dopamine, and uric acid in an electrochemical biosensor was achieved. The electrode active material (PEDOT‐GQD) was fabricated by one‐step electropolymerization using EDOT monomer and an ionic complex (Li‐GQD) consisting of several Li+ cations and one multivalent GQD anion. The PEDOT‐GQD with expanded‐coil polymeric chains increases not only intramolecular electron transfer among PEDOT chains but also interfacial charge transfer between the target molecules and that of PEDOT through π–π interaction and electrostatic attraction…“ Learn more about the story behind the research featured on the front cover in this issue's Cover Profile. Read the corresponding Research Article at 10.1002/celc.202200557.