Single‐Component Electroactive Polymer Architectures for Non‐Enzymatic Glucose Sensing

Kousseff, Christina J.; Wustoni, Shofarul; Silva, Raphaela K. S.; Lifer, Ariel; Savva, Achilleas; Frey, Gitti L.; Inal, Sahika; Nielsen, Christian B.

doi:10.1002/advs.202308281

Cited by 7 publications

(1 citation statement)

References 86 publications

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“…Electroactive polymers (EAPs) can be divided into ionic EAPs and electronic EAPs according to their driving mechanisms [ 1 , 2 , 3 ]. Ionic EAPs respond to the electric field by the diffusion of ions in the material, which requires an electrolyte environment to work, and hence, limits their applications in dry or extreme environments [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of PANI/CuPc/PDMS Composite Elastomer with High Dielectric Constant and Low Modulus Assisted by Electric Fields

Hu,

Chu,

Liu

et al. 2024

Polymers

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Dielectric elastomer is a kind of electronic electroactive polymer, which plays an important role in the application of soft robots and flexible electronics. In this study, an all-organic polyaniline/copper phthalocyanine/silicone rubber (PANI/CuPc/PDMS) dielectric composite with superior comprehensive properties was prepared by manipulating the arrangement of filler in a polymer matrix assisted by electric fields. Both CuPc particles and PANI particles can form network structures in the PDMS matrix by self-assembly under electric fields, which can enhance the dielectric properties of the composites at low filler content. The dielectric constant of the assembled PANI/CuPc/PDMS composites can reach up to 140 at 100 Hz when the content of CuPc and PANI particles is 4 wt% and 2.5 wt%, respectively. Moreover, the elastic modulus of the composites remains below 2 MPa, which is important for electro-deforming. The strain of assembled PANI/CuPc/PDMS three-phase composites at low electric field strength (2 kV/mm) can increase up to five times the composites with randomly dispersed particles, which makes this composite have potential application in the field of soft robots and flexible electronics.

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Section: Introductionmentioning

confidence: 99%

Preparation of PANI/CuPc/PDMS Composite Elastomer with High Dielectric Constant and Low Modulus Assisted by Electric Fields

Hu,

Chu,

Liu

et al. 2024

Polymers

View full text Add to dashboard Cite

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Nanoporous Conjugated Polymer Aerogel Films for High‐Performance Electrochemical Transistors

Hu,

Gu,

Yang

et al. 2024

Adv Funct Materials

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Organic electrochemical transistors (OECTs) possess low operating voltage and excellent amplification capability and show promising applications in biosensors and flexible electronics. However, the active layers of OECTs are usually dense films, which show limited ion penetration/transport, resulting in limited performances of OECTs. Here, unprecedented high‐performance flexible multifunctional OECTs based on nanoporous (mainly 2–60 nm), high‐specific‐surface‐area (255–281 m2 g−1), and flexible conjugated polymer aerogel films are developed. The nanoporous structures effectively facilitate ion penetration/transport, leading to significantly enhanced transconductance (48.5–53.5 mS) and on/off ratio (6.4 × 104) of the OECTs compared with those of dense devices. The resulting OECT‐based glucose sensors exhibit an ultralow detection limit of 1 pm, approximately two to three orders of magnitude lower than those of the previously reported OECT glucose sensors, and an ultrabroad detection range of 1 pm–5 m. They can detect trace amounts of glucose in sweat, serum, saliva, and urine in real time. Moreover, the OECTs can be used for high‐performance flexible artificial synapses and electrocardiogram monitoring. This work provides a powerful strategy toward highly sensitive biosensors, artificial synapses, and electrophysiological signal monitoring.

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Balancing Electroactive Backbone and Oligo(Ethylene Oxy) Side‐Chain Content Improves Stability and Performance of Soluble PEDOT Copolymers in Organic Electrochemical Transistors

Bardagot,

DiTullio,

Jones

et al. 2024

Adv Funct Materials

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The development of devices based on organic electrochemical transistors (OECTs) relies on the rational design of high‐performing organic mixed ionic‐electronic conductors (OMIECs). Here, a series of solution‐processable copolymers composed of unsubstituted 2,2′‐bis‐(3,4‐ethylenedioxy)thiophene (biEDOT) and 3,4‐propylenedioxythiophene (ProDOT) substituted with linear or branched oligo(ethylene oxy) (OE) side chains are reported. By varying the size of the linear and branched side chains, it is found that the highest OECT performance is achieved with a near equivalent molar mass of the side chain and electroactive conjugated polymer repeat unit. With four OE units (PE2‐OE4, electroactive content of 49%), OECTs with state‐of‐the‐art normalized transconductance (453 ± 70 S cm−1) and µC* (830 ± 37 F cm−1 V−1 s−1), rapid dedoping kinetics, and a pulsing stability of 99% IDS retention over 200 ON/OFF cycles are achieved. A consistent improvement in OECT stability with decreasing side‐chain size is also observed. The origin of the enhanced stability is rationalized by correlating IDS losses to changes in channel absorbance cycle after cycle during operation. This work encourages the calculation of the electroactive polymer content of an OMIEC when designing the side chains. It also shows that the PE2 backbone with short OE side chains is a promising structure for (bio)electrochemical devices.

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Single‐Component Electroactive Polymer Architectures for Non‐Enzymatic Glucose Sensing

Cited by 7 publications

References 86 publications

Preparation of PANI/CuPc/PDMS Composite Elastomer with High Dielectric Constant and Low Modulus Assisted by Electric Fields

Preparation of PANI/CuPc/PDMS Composite Elastomer with High Dielectric Constant and Low Modulus Assisted by Electric Fields

Nanoporous Conjugated Polymer Aerogel Films for High‐Performance Electrochemical Transistors

Balancing Electroactive Backbone and Oligo(Ethylene Oxy) Side‐Chain Content Improves Stability and Performance of Soluble PEDOT Copolymers in Organic Electrochemical Transistors

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