Highly Transparent, Underwater Self-Healing, and Ionic Conductive Elastomer Based on Multivalent Ion–Dipole Interactions

Zhang, Yucheng; Li, Mengxue; Qin, Bo; Chen, Lili; Liu, Yuncong; Zhang, Xi; Wang, Chao

doi:10.1021/acs.chemmater.0c00096

Cited by 115 publications

(103 citation statements)

References 37 publications

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“…The dipole–dipole and ion–dipole interactions between the CF bond and its environment have been well established due to the large dipole moment. [ 30,35–39 ] Owing to the electronegativity of CF 3 , the cation of IL could form ion–dipole interactions with the CF 3 group in PIL. The ion–ion interactions could also be formed between the cation of IL and the anion of PIL due to the Coulomb potential.…”

Section: Resultsmentioning

confidence: 99%

“…[ 31,32 ] Since the CF bond is a very poor hydrogen donor and acceptor, fluoropolymers can eliminate the interference of water molecules, which makes it possible for underwater applications. Although elastic conductors based on fluoropolymers have been developed for stretchable electronic devices, [ 30,33–35 ] they have not yet achieved the integration of the multiple functions required for the underwater sensors.…”

Section: Introductionmentioning

confidence: 99%

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Underwater Communication and Optical Camouflage Ionogels

2021

Advanced Materials

350

302

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Marine animals, such as leptocephalus and jellyfish, can sense external stimuli and achieve optical camouflage in the aquatic environment. Fabricating an intelligent soft sensor that can mimic the capabilities of transparent marine animals and function underwater can enable transformative applications in various novel fields. However, previously reported soft sensors struggle to meet the requirements of adhesion, self‐healing ability, optical transparency, and stable conductivity in the aquatic environment. Herein, high‐performance ionogels by virtue of ion–dipole and ion–ion interactions between fluorine‐rich poly(ionic liquid) and ionic liquid are designed. The hydrophobic dynamic viscoelastic networks provide excellent properties for ionogels, including optical transparency, adjustable mechanical properties, underwater self‐healing ability, underwater adhesiveness, conductivity, and 3D printability. A mechanically compliant and visually invisible underwater soft sensor based on ionogel is developed. This sensor can achieve optical camouflage, human‐body‐motion detection, and barrier‐free communication in the aquatic environment. A novel contactless sensing mechanism based on changing the electron transfer pathway is proposed. Several interesting functions, such as detection of water environment changes, recognition of objects, delivery of information, and even identification of human standing posture can be realized. Importantly, the ionogel sensor can avoid fatigue and physical damage in the sensing process.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Underwater Communication and Optical Camouflage Ionogels

2021

Advanced Materials

350

302

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“…Most importantly, they can improve the service life of mobile phones and tablets, reducing the waste of resources and fu4-3nds. Self-healing materials have tremendous potential applications for electronic skin, [34][35][36] energy storage devices, sensors, [37] conductive coatings and supercapacitors. Therefore, it is particularly significant to understand the classification and characteristics of self-healing materials, repair systems (Fig.…”

Section: Introductionmentioning

confidence: 99%

Self-healing Materials: A Review of Recent Developments

Song¹,

Jiang²,

Li³

et al. 2021

ES Mater. Manuf.

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Self-healing polymer is a kind of functional polymer materials that can repair scratches, cracks and other mechanical damage, whose unique self-healing ability is of great significance for prolonging the life of materials. Eigen self-healing polymers have become the focus of current research due to their advantages of mild healing conditions and repeatable healing. In this paper, the preparation technology and properties of self-healing elastomers were reviewed, which provided guidance for the preparation of polymers with high repair efficiency and pointed out its future development trend. The self-healing polymer materials based on Diels-Alder reaction, metal bond, hydrogen bond, ionic bond, disulfide bond, etc., are mainly introduced, and their preparation process, healing mechanism and healing properties are reviewed. Although much progress has been made in self-healing elastomers based on different dynamic bonds, the development of materials with high repair efficiency remains a huge challenge. In this paper, various repair pathways of self-healing elastomers were reviewed, which provided guidance for the balance between repair and mechanical properties. The development of inherently self-healing polymers was also prospected.

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“…[ 5–7 ] In recent years, self‐healing PUs has attracted much attention due to its recyclability and great application prospect. [ 8–10 ] Researchers are developing more and more species of self‐healing PUs, among which the supramolecular PUs composed of reversible non‐covalent bonds such as hydrogen, [ 11,12 ] metal‐ligand coordination, [ 13,14 ] ionic interaction, [ 15,16 ] host–guest interaction, [ 17,18 ] π – π stacking, [ 19,20 ] disulfide exchange, [ 21,22 ] etc., and the synthesized supramolecular PUs have intrinsic self‐healing properties. [ 23 ] Hydrogen bond as reversible non‐covalent bond is essential in PU, but the strength of hydrogen bond in the main chain of PU is generally not enough to harden and toughen the PU material after healing.…”

Section: Introductionmentioning

confidence: 99%

Main‐Side Chain Hydrogen Bonding‐Based Self‐Healable Polyurethane with Highly Stretchable, Excellent Mechanical Properties for Self‐Healing Acid–Base Resistant Coating

et al. 2021

Macromol. Rapid Commun.

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Developing an autonomous self‐healing polyurethane (PU) elastomer with excellent mechanical properties and high ductility has attracted increasing attention. Nowadays, the synthesis of elastomers with excellent mechanical properties and rapid self‐healing at room temperature faces a huge challenge. Herein, This work reports a new supramolecular PU with excellent mechanical properties and rapid self‐healing at room temperature through the introduction of T‐type chain extender into the supramolecular polymer chain. The introduction of T‐chain extender can be used to enhance the mechanical strength of PU, and the multiple hydrogen bonds on the side‐chain provide theoretical support for the rapid self‐healing ability of PU. Maximum stress of the synthesized PU can reach 3.4 ± 0.15 Mpa, and maximum elongation at break can reach 3200% ± 160%. Due to flexibility and re‐constructability of side‐chain hydrogen bonds, PU stress repair efficiency can reach 96.7%, and can be self‐healing scratches rapidly and effectively at room temperature. The mechanical properties and self‐healing properties of PU can be adjusted by the content of T‐type chain extender. The PU is applied to the metal surface coating, which has excellent acid–base resistance, bond strength up to 2.9 ± 0.1 Mpa, and the ability to eliminate local damage on the coating surface quickly at room temperature.

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Highly Transparent, Underwater Self-Healing, and Ionic Conductive Elastomer Based on Multivalent Ion–Dipole Interactions

Cited by 115 publications

References 37 publications

Underwater Communication and Optical Camouflage Ionogels

Underwater Communication and Optical Camouflage Ionogels

Self-healing Materials: A Review of Recent Developments

Main‐Side Chain Hydrogen Bonding‐Based Self‐Healable Polyurethane with Highly Stretchable, Excellent Mechanical Properties for Self‐Healing Acid–Base Resistant Coating

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