Molecular Approach to Conjugated Polymers with Biomimetic Properties

Baek, Paul; Voorhaar, Lenny; Barker, David; Travaš-Sejdić, Jadranka

doi:10.1021/acs.accounts.7b00596

Cited by 59 publications

(63 citation statements)

References 55 publications

(140 reference statements)

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“…These unique properties of PEDOT:PSS have enabled the development of numerous advanced organic electronic devices including solar cells, light‐emitting diodes, transistors, memristors, and artificial synapses for neuromorphic computing . Recently, with the rising research trend in flexible electronics, which have offered unprecedented opportunities in revolutionizing our understanding of electronic devices, PEDOT:PSS has extended its important role in developing various flexible organic electronic devices such as organic electrochemical transistors (OECTs), an emerging tool for biosensing . However, directly manipulating and patterning PEDOT:PSS thin films on flexible substrates remain challenging because of difficulties in obtaining uniform and continuous films on soft substrates such as plastics and elastomers due to their hydrophobic nature .…”

Section: Introductionmentioning

confidence: 99%

Hydrogel‐Enabled Transfer‐Printing of Conducting Polymer Films for Soft Organic Bioelectronics

Zhang

Ling

Chen

et al. 2019

Adv Funct Materials

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The use of conducting polymers such as poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) for the development of soft organic bioelectronic devices, such as organic electrochemical transistors (OECTs), is rapidly increasing. However, directly manipulating conducting polymer thin films on soft substrates remains challenging, which hinders the development of conformable organic bioelectronic devices. A facile transfer-printing of conducting polymer thin films from conventional rigid substrates to flexible substrates offers an alternative solution. In this work, it is reported that PEDOT:PSS thin films on glass substrates, once mixed with surfactants, can be delaminated with hydrogels and thereafter be transferred to soft substrates without any further treatments. The proposed method allows easy, fast, and reliable transferring of patterned PEDOT:PSS thin films from glass substrates onto various soft substrates, facilitating their application in soft organic bioelectronics. By taking advantage of this method, skin-attachable tattoo-OECTs are demonstrated, relevant for conformable, imperceptible, and wearable organic biosensing.

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Section: Introductionmentioning

confidence: 99%

Hydrogel‐Enabled Transfer‐Printing of Conducting Polymer Films for Soft Organic Bioelectronics

Zhang

Ling

Chen

et al. 2019

Adv Funct Materials

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“…Due to their highly conjugated backbones that are in oxidized or reduced states, conductive polymers are electrically conductive . In addition, because of the merits such as low moduli, chemistry‐structure‐properties tunability, and easy and scalable processing, conductive polymers have been investigated for many unique electronic and optoelectronic applications .…”

Section: Rubbery Conductorsmentioning

confidence: 99%

Rubbery Electronics Fully Made of Stretchable Elastomeric Electronic Materials

2019

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processes, and device structures have been transforming traditional wafer electronics to be soft, stretchy, and reconfigurable. In particular, owing to their superior mechanical characteristics, i.e., soft, bendable, stretchable, and twistable, stretchable electronics hold promise in health monitors, [1] medical implants, [2][3][4][5][6][7][8][9][10] artificial skins, [5,6,[11][12][13][14][15] human-machine interfaces, [11,[16][17][18][19][20] wearable internet of things, [21][22][23][24] etc.As the core and fundamental building block of active electronics, transistors constructed from semiconductors, conductors, and dielectrics are key to enabling electrical functionalities such as switching and amplification. To make transistors stretchable, either the associated electronic materials need to be stretchable or special mechanical structures and layouts need to be included in the transistor design. There are many studies reporting stretchable conductors, as reviewed in the following, while many readily available dielectric materials are stretchy. These have significantly offered many possible options in the device design space. To date, the dominant semiconductors employed for stretchable electronics are either conventional or emerging semiconductors. However, these materials, either in the format of inorganics (such as Si, GaAs, oxides) or organics (such as poly(3-hexylthiophene-2,5-diyl) or P3HT, pentacene), are mechanically nonstretchable. [20,21] Existing strategies to make these nonstretchable semiconductors stretchable mainly involve creating special mechanical structures or architectures with these materials, such as out-of-plane wrinkles, [25,26] in-plane serpentines, [27,28] rigid islands with deformable interconnects, [29][30][31] and kirigami architectures, [32][33][34] to eliminate mechanical strain while they are stretched. However, these approaches require sophisticated structural designs, complicated manufacturing processes, or consume a large area due to stretchable interconnection, all of which pose substantial challenges in high-density integration, packaging, associated high cost, and mass production.Constructing devices all from intrinsically stretchable elastomeric electronic materials offers another interesting yet promising route toward stretchable transistors and electronics. These types of electronics, namely rubbery electronics, neatly avoid the aforementioned challenges since they do not require structural engineering for device fabrication and the manufacturing processes can be adopted into conventional fabrication processes. [29,35] In addition, rubbery electronics offer better cost Stretchable electronics outperform existing rigid and bulky electronics and benefit a wide range of species, including humans, machines, and robots, whose activities are associated with large mechanical deformation and strain. Due to the nonstretchable nature of most electronic materials, in particular semiconductors, stretchable electronics are mostly realized through the strategies of architectural engine...

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“…[23] The synthetic handle also gives a route to immobilize biomolecules of interest on CP film surfaces or within their bulk, either via side-chain engineering in solution state or by grafting from the films. [24][25][26] The functionalization of CPs with biomolecules not only helps to tune responses of cells to the electronic films, [27,28] but is also used to build powerful biochemical sensors. [29,30] Another level of sophistication in organic bioelectronic devices stems from the different channels of signal generation that CPs possess at the electrolyte/film interface.…”

Section: Introductionmentioning

confidence: 99%

Organic Bioelectronics: From Functional Materials to Next‐Generation Devices and Power Sources

2020

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Conjugated polymers (CPs) possess a unique set of features setting them apart from other materials. These properties make them ideal when interfacing the biological world electronically. Their mixed electronic and ionic conductivity can be used to detect weak biological signals, deliver charged bioactive molecules, and mechanically or electrically stimulate tissues. CPs can be functionalized with various (bio)chemical moieties and blend with other functional materials, with the aim of modulating biological responses or endow specificity toward analytes of interest. They can absorb photons and generate electronic charges that are then used to stimulate cells or produce fuels. These polymers also have catalytic properties allowing them to harvest ambient energy and, along with their high capacitances, are promising materials for next‐generation power sources integrated with bioelectronic devices. In this perspective, an overview of the key properties of CPs and examination of operational mechanism of electronic devices that leverage these properties for specific applications in bioelectronics is provided. In addition to discussing the chemical structure–functionality relationships of CPs applied at the biological interface, the development of new chemistries and form factors that would bring forth next‐generation sensors, actuators, and their power sources, and, hence, advances in the field of organic bioelectronics is described.

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Molecular Approach to Conjugated Polymers with Biomimetic Properties

Cited by 59 publications

References 55 publications

Hydrogel‐Enabled Transfer‐Printing of Conducting Polymer Films for Soft Organic Bioelectronics

Hydrogel‐Enabled Transfer‐Printing of Conducting Polymer Films for Soft Organic Bioelectronics

Rubbery Electronics Fully Made of Stretchable Elastomeric Electronic Materials

Organic Bioelectronics: From Functional Materials to Next‐Generation Devices and Power Sources

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