Stretchable self-healable semiconducting polymer film for active-matrix strain-sensing array

Oh, Jin Young; Son, Donghee; Katsumata, Tōru; Lee, Yeongjun; Kim, Yeongin; Lopez, Jeffrey; Wu, Hung‐Chin; Kang, Jiheong; Park, Joonsuk; Gu, Xiaodan; Mun, Je Ho; Wang, Nathan Ging-Ji; Yin, Yikai; Cai, Wei; Yun, Youngjun; Tok, Jeffrey B.‐H.; Bao, Zhenan

doi:10.1126/sciadv.aav3097

Cited by 193 publications

(152 citation statements)

References 55 publications

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“…However, in case of ISHCP films with different molecular weights of PEG, ISHCP-400 (This means that the molecular weight of the added PEG is 400) maintained its initial electrical properties under 50% strain. The hydroxyl group of PEG formed a covalent bond with the sulfate of PSS by H 2 SO 4 catalyst, and bulky dynamic networks dissipated the force when stretched 16 .…”

Section: Resultsmentioning

confidence: 99%

Design of intrinsically stretchable and highly conductive polymers for fully stretchable electrochromic devices

Kim

Park

et al. 2020

Sci Rep

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Stretchable materials are essential for next generation wearable and stretchable electronic devices. Intrinsically stretchable and highly conductive polymers (termed ISHCP) are designed with semi interpenetrating polymer networks (semi-IPN) that enable polymers to be simultaneously applied to transparent electrodes and electrochromic materials. Through a facile method of acid-catalyzed polymer condensation reaction, optimized ISHCP films show the highest electrical conductivity, 1406 S/cm, at a 20% stretched state. Without the blending of any other elastomeric matrix, ISHCP maintains its initial electrical properties under a cyclic stretch-release of over 50% strain. A fully stretchable electrochromic device based on ISHCP is fabricated and shows a performance of 47.7% ∆T and high coloration efficiency of 434.1 cm2/C at 590 nm. The device remains at 45.2% ∆T after 50% strain stretching. A simple patterned electrolyte layer on a stretchable electrochromic device is also realized. The fabricated device, consisting of all-plastic, can be applied by a solution process for large scale production. The ISHCP reveals its potential application in stretchable electrochromic devices and satisfies the requirements for next-generation stretchable electronics.

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Section: Resultsmentioning

confidence: 99%

Design of intrinsically stretchable and highly conductive polymers for fully stretchable electrochromic devices

Kim

Park

et al. 2020

Sci Rep

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“…Recent advances in wearable electronics and bioelectronics have brought a great deal of attention to self-healing organic electronic materials, [1][2][3][4][5][6][7] which have been used in devices, such as sensors, [8][9][10] field-effect transistors (FETs), [11,12] electrochemical transistors (ECTs), [13] and energy storage devices. [14,15] The organic conducting polymer poly(3,4-ethylene-dioxythiophene): polystyrene sulfonate (PEDOT:PSS) is an excellent candidate for self-healable electronics, as it combines water-induced or autonomic self-healing with high conductivity and ease of process.…”

Section: Introductionmentioning

confidence: 99%

Tailoring the Self‐Healing Properties of Conducting Polymer Films

Zhang

Hamad

et al. 2020

Macromolecular Bioscience

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shown recently that adding the biocompatible polymer polyethylene glycol (PEG) to PEDOT:PSS aqueous suspensions yields softer films showing autonomic healing. [19] It had been reported that PEDOT:PSS mixed with the surfactant Triton X-100 forms a conducting polymer dough that is capable of recovering current autonomically, due to enhanced viscoelasticity. [18,20] Moreover, a PEDOT:PSS hydrogel, formed by mixing PEDOT:PSS aqueous suspension and 4-dodecylbenzenesulfonic acid (DBSA), achieves both electrical and mechanical healing after cutting and pasting. [21] Cao et al. reported a stretchable PEDOT:PSS hydrogel in poly(N-isopropyl acrylamide) (PNIPAM) matrix can be healed at room temperature without external stimulus due to multiple dynamic hydrogen bonds among PSS − @PNIPAM shells. [22] Although autonomic or water-induced healing has been demonstrated for several PEDOT:PSS formulations, some important questions remain unanswered. For instance, it is still unclear how the healing process is affected by compounds added during PEDOT:PSS film processing to modify the film adhesion properties, such as crosslinkers, or by treatments carried out to increase the electrical conductivity, such as acid soaking. [23-31] Moreover, it is unclear if self-healing properties extend to other forms of PEDOT containing counterions other than PSS, obtained by chemical or electrochemical polymerization. Such forms of PEDOT are of interest since in small dopants, such as para-toluene sulfonate (or tosylate, Tos), trifluoromethanesulfonate (or triflate, OTf), and ClO 4 − , lead to an enhanced electrical conductivity (>1000 S cm −1) due to a more compact PEDOT-PEDOT stack. [32-34] In this work, we studied the water-enabled self-healing of the following systems: PEDOT:PSS films processed in presence of the crosslinker 3-(glycidyloxypropyl)trimethoxysilane (GOPS); PEDOT:PSS films post-treated with sulfuric acid; PEDOT:Tos and PEDOT:OTf films obtained by chemical polymerization; and PEDOT:ClO 4 obtained by electrochemical polymerization. We showed that i) the presence of GOPS in the film as well as a long post-treatment with sulfuric acid significantly impair the healing ability; ii) films of PEDOT:Tos as well as PEDOT:OTf show water-enabled healing; iii) electropolymerized PEDOT:ClO 4 films do not show water-induced healing. The self-healing properties were found to be strictly related The conducting polymer polyethylenedioxythiophene doped with polystyrene sulfonate (PEDOT:PSS) has received great attention in the field of wearable bioelectronics due to its tunable high electrical conductivity, air stability, ease of processability, biocompatibility, and recently discovered self-healing ability. It has been observed that blending additives with PEDOT:PSS or post-treatment permits the tailoring of intrinsic polymer properties, though their effects on the water-enabled self-healing property have not previously been established. Here, it is demonstrated that the water-enabled healing behavior of conducting polymers is decreased by crosslinke...

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“…[19,20] Self-healing, on the other hand, becomes an important aspect of next-generation electronic materials that are immune to mechanical stress or environmental interferents, rendering the devices robust and durable. [21,22] To regenerate the damaged conjugated matrix, the polymer requires dynamic bonds, such as hydrogen bonds, electrostatic interactions, and metal-ligand bonds within or in between chains, which introduces some level of mobility to chains so that they can intermix where there is a fracture. [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.…”

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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Stretchable self-healable semiconducting polymer film for active-matrix strain-sensing array

Abstract: Skin-inspired semiconductor that is intrinsically stretchable, self-healable, and strain-sensitive for advanced sensory devices.

Cited by 193 publications

References 55 publications

Design of intrinsically stretchable and highly conductive polymers for fully stretchable electrochromic devices

Design of intrinsically stretchable and highly conductive polymers for fully stretchable electrochromic devices

Tailoring the Self‐Healing Properties of Conducting Polymer Films

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

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