首页|Local Chemical Enhancement and Gating of Organic Coordinated Ionic-Electronic Transport

Local Chemical Enhancement and Gating of Organic Coordinated Ionic-Electronic Transport

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Superior properties in organic mixed ionic-electronic conductors (OMIECs)over inorganic counterparts have inspired intense interest in biosensing，soft-robotics， neuromorphic computing， and smart medicine。 However， slowion transport relative to charge transport in these materials is a limiting factor。Here， it is demonstrated that hydrophilic molecules local to an interfacialOMIEC nanochannel can accelerate ion transport with ion mobilities surpassingelectrophoretic transport by more than an order of magnitude。 Furthermore，ion access to this interfacial channel can be gated through local surface energy。This mechanism is applied in a novel sensing device， which electronically detectsand characterizes chemical reaction dynamics local to the buried channel。The ability to enhance ion transport at the nanoscale in OMIECs as well as governion transport through local chemical signaling enables new functionalitiesfor printable， stretchable， and biocompatible mixed conduction devices。

chemical sensinginterfacial transportion mobility and conductivityorganic electronicsorganic mixed ionic-electronic conductors (OMIEC)

Tamanna Khan、Terry McAfee、Thomas J. Ferron、Awwad Alotaibi、Brian A. Collins

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Department of Materials EngineeringWashington State UniversityPullman, WA 99164, USA

Department of PhysicsWashington StateUniversityPullman,WA 99164,USA||Lawrence BerkeleyNational LaboratoryBerkeley,CA 94720,USA

Department of PhysicsWashington StateUniversityPullman,WA 99164,USA

Department of Materials EngineeringWashington State UniversityPullman, WA 99164, USA||Department of PhysicsWashington StateUniversityPullman,WA 99164,USA

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2025

10.1002/adma.202406281

Advanced Materials

Advanced Materials

ISSN：0935-9648
年,卷(期)：2025.37(5)
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