skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Role of the Anion on the Transport and Structure of Organic Mixed Conductors

Journal Article · · Advanced Functional Materials
 [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [3]; ORCiD logo [4]
  1. Department of Biomedical Engineering Northwestern University IL 60208 USA, Department of Materials Science and Engineering Stanford University CA 94305 USA
  2. Department of Chemistry Imperial College London SW7 2AZ London UK, Department of Physics Imperial College London SW7 2AZ London UK
  3. Biological and Environmental Science and Engineering Division King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
  4. Department of Biomedical Engineering Northwestern University IL 60208 USA, Simpson Querrey Institute for BioNanotechnology Northwestern University IL 60611 USA
  5. Department of Chemistry Imperial College London SW7 2AZ London UK, Physical Science and Engineering Division KAUST Solar Center (KSC) King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
  6. Department of Materials Science and Engineering Stanford University CA 94305 USA

Abstract Organic mixed conductors are increasingly employed in electrochemical devices operating in aqueous solutions that leverage simultaneous transport of ions and electrons. Indeed, their mode of operation relies on changing their doping (oxidation) state by the migration of ions to compensate for electronic charges. Nevertheless, the structural and morphological changes that organic mixed conductors experience when ions and water penetrate the material are not fully understood. Through a combination of electrochemical, gravimetric, and structural characterization, the effects of water and anions with a hydrophilic conjugated polymer are elucidated. Using a series of sodium‐ion aqueous salts of varying anion size, hydration shells, and acidity, the links between the nature of the anion and the transport and structural properties of the polymer are systematically studied. Upon doping, ions intercalate in the crystallites, permanently modifying the lattice spacings, and residual water swells the film. The polymer, however, maintains electrochemical reversibility. The performance of electrochemical transistors reveals that doping with larger, less hydrated, anions increases their transconductance but decreases switching speed. This study highlights the complexity of electrolyte‐mixed conductor interactions and advances materials design, emphasizing the coupled role of polymer and electrolyte (solvent and ion) in device performance.

Sponsoring Organization:
USDOE
OSTI ID:
1488355
Journal Information:
Advanced Functional Materials, Journal Name: Advanced Functional Materials Vol. 29 Journal Issue: 5; ISSN 1616-301X
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 110 works
Citation information provided by
Web of Science

References (68)

Enthalpy of Solution of Potassium Tetrafluoroborate in Water and in Aqueous Sodium Fluoride. Thermodynamic Properties of the Aqueous Tetrafluoroborate Anion and Potassium Tetrafluoroborate journal March 2005
Effects of doping on the crystal structure of poly(3-alkylthiophene) journal January 1992
Enhanced capacitance and rate capability of graphene/polypyrrole composite as electrode material for supercapacitors journal July 2011
Direct Measurement of Ion Mobility in a Conducting Polymer journal June 2013
Effect of Copolymer Composition on Electronic Conductivity of Electrochemically Oxidized Poly(3-hexylthiophene)- b -poly(ethylene oxide) Block Copolymers journal July 2015
Neuromorphic Functions in PEDOT:PSS Organic Electrochemical Transistors journal October 2015
Influence of the Polymerization Method on the Oxygen Reduction Reaction Pathway on PEDOT journal December 2012
Organic electronics for precise delivery of neurotransmitters to modulate mammalian sensory function journal July 2009
X-ray-diffraction studies of the three-dimensional structure within iodine-intercalated poly(3-octylthiophene) journal January 1995
Water characteristics depend on the ionic environment. Thermodynamics and modelisation of the aquo ions journal February 2001
Redox-Stability of Alkoxy-BDT Copolymers and their Use for Organic Bioelectronic Devices journal February 2018
Multichromophoric electrochromic polymers: colour tuning of conjugated polymers through the side chain functionalization approach journal January 2014
Understanding hydrated polymers: the perspective of NMR journal May 1999
Controlling Epileptiform Activity with Organic Electronic Ion Pumps journal April 2015
Conductivity of de-doped poly(3,4-ethylenedioxythiophene) journal August 2002
A non-volatile organic electrochemical device as a low-voltage artificial synapse for neuromorphic computing journal February 2017
Sequential Doping Reveals the Importance of Amorphous Chain Rigidity in Charge Transport of Semi-Crystalline Polymers journal September 2017
Structural Effects of Gating Poly(3-hexylthiophene) through an Ionic Liquid journal July 2017
Probing Molecular and Surface Interactions of Comb-Type Polymer Polystyrene- graft -poly(ethylene oxide) (PS- g -PEO) with an SFA journal August 2012
Structural evolution in iodine-doped poly(3-alkylthiophenes) journal June 1991
Crystal Structural Change of Poly(3-Alkylthiophene) Induced by Iodine Doping as Revealed by X-Ray Diffraction and Infrared/Raman Spectroscopic Measurements* journal July 1994
Molecular dynamics study on ionic hydration journal March 2002
Acido-basic control of the thermoelectric properties of poly(3,4-ethylenedioxythiophene)tosylate (PEDOT-Tos) thin films journal January 2015
Therapy using implanted organic bioelectronics journal May 2015
Benchmarking organic mixed conductors for transistors journal November 2017
Modification of the electrochemical and electronic properties of electrogenerated poly(3,4-ethylenedioxythiophene) by hydroxymethyl and oligo(oxyethylene) substituents journal January 2000
Molecular Design of Semiconducting Polymers for High-Performance Organic Electrochemical Transistors journal August 2016
Cationic transport numbers in polyether-based networks containing lithium salts journal January 1985
Crystal Structure of Poly(3-alkylthiophene) and Its Doping Effect journal September 1992
Stepwise Hydrolysis of Hexafluoroantimonate(V) journal February 1966
Ion Gel-Gated Polymer Thin-Film Transistors Operating Mechanism and Characterization of Gate Dielectric Capacitance, Switching Speed, and Stability journal May 2009
Organic electrochemical transistors journal January 2018
Hydrolysis of Tetrafluoroborate and Hexafluorophosphate Counter Ions in Imidazolium-Based Ionic Liquids journal March 2010
Chemical potential–electric double layer coupling in conjugated polymer–polyelectrolyte blends journal December 2017
Materials Science of Membranes for Gas and Vapor Separation book June 2006
N-type organic electrochemical transistors with stability in water journal October 2016
Conjugated Polymers in Bioelectronics journal May 2018
Structural control of mixed ionic and electronic transport in conducting polymers journal April 2016
Concentration Dependence of Ionic Hydration Numbers journal August 2014
Anion-Dependent Doping and Charge Transport in Organic Electrochemical Transistors journal July 2018
Hydrolysis of Fluoboric Acid in Aqueous Solution journal March 1948
The Role of the Side Chain on the Performance of N-type Conjugated Polymers in Aqueous Electrolytes journal April 2018
Unexpected Interaction between PEDOT and Phosphonium Ionic Liquids journal July 2013
Relationship between Mobility and Lattice Strain in Electrochemically Doped Poly(3-hexylthiophene) journal November 2015
Oxygen-induced doping on reduced PEDOT journal January 2017
Effects of environmental factors on the electrooptical properties of conjugated polymers containing oligo(oxyethylene) substituents journal October 1991
Modification of the structure and electrochemical properties of poly(thiophene) by ether groups journal January 1989
Molecularly selective nanoporous membrane-based wearable organic electrochemical device for noninvasive cortisol sensing journal July 2018
Nanostructured Polypyrrole as a flexible electrode material of supercapacitor journal April 2016
The rise of plastic bioelectronics journal December 2016
2-D Drift-Diffusion Simulation of Organic Electrochemical Transistors journal December 2017
Controlling the mode of operation of organic transistors through side-chain engineering journal October 2016
Direct metabolite detection with an n-type accumulation mode organic electrochemical transistor journal June 2018
Enhancing Cation Diffusion and Suppressing Anion Diffusion via Lewis-Acidic Polymer Electrolytes journal January 2017
Steady-State and Transient Behavior of Organic Electrochemical Transistors journal October 2007
Ionochromic effects in regioregular ether-substituted polythiophenes journal January 1995
Oxygen Reduction Reaction in Conducting Polymer PEDOT: Density Functional Theory Study journal May 2017
Electrochemical strain microscopy probes morphology-induced variations in ion uptake and performance in organic electrochemical transistors journal June 2017
Structural aspects of electrochemical doping and dedoping of poly(3,4-ethylenedioxythiophene) journal June 2000
Raman study of the hydrolysis of the hexafluoroantimonate(1-) ion journal February 1972
The different faces of poly(ethylene glycol) journal August 1997
X-Ray Scattering Reveals Ion-Induced Microstructural Changes During Electrochemical Gating of Poly(3-Hexylthiophene) journal September 2018
Fundamental water and salt transport properties of polymeric materials journal January 2014
Organic electrochemical transistors as impedance biosensors journal December 2014
Optical study of electrochromic moving fronts for the investigation of ion transport in conducting polymers journal January 2016
Subthreshold Operation of Organic Electrochemical Transistors for Biosignal Amplification journal July 2018
Effect of channel thickness, electrolyte ions, and dissolved oxygen on the performance of organic electrochemical transistors journal August 2015
Organic electrochemical transistors for cell-based impedance sensing journal January 2015

Similar Records

Balancing Ionic and Electronic Conduction for High‐Performance Organic Electrochemical Transistors
Journal Article · Tue Jan 28 00:00:00 EST 2020 · Advanced Functional Materials · OSTI ID:1488355

Mixed Conduction in an N‐Type Organic Semiconductor in the Absence of Hydrophilic Side‐Chains
Journal Article · Thu Mar 18 00:00:00 EDT 2021 · Advanced Functional Materials · OSTI ID:1488355

Role of aggregates and microstructure of mixed-ionic–electronic-conductors on charge transport in electrochemical transistors
Journal Article · Mon Apr 24 00:00:00 EDT 2023 · Materials Horizons · OSTI ID:1488355

Related Subjects