Self-healing flexible sensor based on metal-ligand coordination

Li, Zhixi; Shan, Yifei; Wang, Xiaoxiao; Li, Hao; Yang, Kun; Cui, Yongyan

doi:10.1016/j.cej.2020.124932

Cited by 56 publications

(32 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The SPU sample shows the absorption peak at $280 nm, which is the characteristic peak of DA. 33,65 Furthermore, the glass transition temperatures (T g ) of the obtained composites were measured by DSC tests and the curves are displayed in Fig. 4(c).…”

Section: Design Synthesis and Characteristics Of Materialsmentioning

confidence: 99%

Bioinspired modified graphene oxide/polyurethane composites with rapid self-healing performance and excellent mechanical properties

et al. 2021

View full text Add to dashboard Cite

show abstract

Section: Design Synthesis and Characteristics Of Materialsmentioning

confidence: 99%

Bioinspired modified graphene oxide/polyurethane composites with rapid self-healing performance and excellent mechanical properties

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Furthermore, the healing performance in terms of the mechanical properties was increased with the increase in healing time [89]. Self-healing with metal-ligand coordination was studied in synthetic rubber by Lia et al (2020) [90]. In this research, methyl vinyl silicone rubber (MVQ) was dissolved in a tetrahydrofuran solvent and reacted with DOPA and FeCl3•6H2O.…”

Section: Figurementioning

confidence: 99%

Non-Covalent Interaction on the Self-Healing of Mechanical Properties in Supramolecular Polymers

Buaksuntear

Limarun

Suethao

et al. 2022

IJMS

View full text Add to dashboard Cite

Supramolecular polymers are widely utilized and applied in self–assembly or self–healing materials, which can be repaired when damaged. Normally, the healing process is classified into two types, including extrinsic and intrinsic self–healable materials. Therefore, the aim of this work is to review the intrinsic self–healing strategy based on supramolecular interaction or non-covalent interaction and molecular recognition to obtain the improvement of mechanical properties. In this review, we introduce the main background of non-covalent interaction, which consists of the metal–ligand coordination, hydrogen bonding, π–π interaction, electrostatic interaction, dipole–dipole interaction, and host–guest interactions, respectively. From the perspective of mechanical properties, these interactions act as transient crosslinking points to both prevent and repair the broken polymer chains. For material utilization in terms of self–healing products, this knowledge can be applied and developed to increase the lifetime of the products, causing rapid healing and reducing accidents and maintenance costs. Therefore, the self–healing materials using supramolecular polymers or non-covalent interaction provides a novel strategy to enhance the mechanical properties of materials causing the extended cycling lifetime of products before replacement with a new one.

show abstract

“…Reversible non-covalent self-healing flexible materials also exhibit good self-healing properties, such as hydrogen bond, [58][59][60][61][62] electrostatic interaction, [63][64][65] metal ligands and ionic interaction. [66][67][68][69][70][71][72][73][74][75] Park et al introduced strong and weak hydrogen bonds into the carboxylated polyurethane molecular chain, and successfully prepared a self-healing stretch sensor with energy storage function as shown in Figure 2a. The device has conductivity of up to 2479 S cm −1 , an elongation at break rate of 700% and a self-healing rate of 94%.…”

Section: Reversible Non-covalent Bond (Rnb)mentioning

confidence: 99%

“…[74] Cui et al prepared a self-healing matrix by introducing metal ligand coordination bond into methyl vinyl silicone rubber, and then coated the nanostructured conductive layer (multi walled carbon nanotubes (CNTs) film and silver film) on the selfhealing elastomer substrate to assemble the strain sensor. [75]…”

Section: Reversible Non-covalent Bond (Rnb)mentioning

confidence: 99%

Flexible Self‐Repairing Materials for Wearable Sensing Applications: Elastomers and Hydrogels

Zhou

Dong

et al. 2020

Macromol. Rapid Commun.

100

View full text Add to dashboard Cite

related operations, and destroy the operation of the whole equipment (system). Bao and his colleagues developed a novel self-healing and mechanical force-sensing flexible sensor using micro-structured elastomeric dielectrics, which served as a foundation to improve the stability and lifetime of flexible sensors. [8] Self-healing flexible materials can be divided into two categories, one is solvent-less or water-free after curing and high degree of polymerization of elastomers, such as polyamide, polyurethane, etc., the other is hydrogels, low degree of polymerization, structural cross-linking. In self-healing flexible elastomer sensors, the structure of elastomer is mostly linear structure or semi-cross-linked structure; the elastomer of cross-linked structure is poor flexibility and fragile due to its high degree of polymerization. The elasticity of semi-crosslinked structure has excellent resilience and great potential in the field of flexible flexural sensors. In the past two years, self-healing flexible hydrogels have attracted extensive attention due to their excellent stretchability and resilience, as well as outstanding performance in the preparation of sensors with high sensitivity and fast response. [9,10] Sensors with elastomers and hydrogels as flexible matrices face great difficulties in conductivity, which affects the sensitivity and stability of the sensors. Filling conductive materials is the most commonly method, in which organic conductive polymers (polyaniline, [11] polypyrrole [12]) are filled to construct conductive networks, and good interfacial compatibility results in uniform conductive polymer elastomers, but the inherent color fillers affect the transparency of flexible sensors, limiting their applications in the biomedical field. [13-17] Flexible materials filled with inorganic conductive particles (graphene, nano-silver wire) have high conductivity, but phase separation between filler and matrix usually reduces the tensile, toughness and fatigue resistance, and even affects the self-healing ability of flexible materials. Modified fillers are often required to improve affinity for flexible matrices and inhibit phase separation. However, many hydrogel matrices are intrinsically weak and cannot withstand cyclic loadings. [18] Although surface modified fillers can improve strength and toughness, it is difficult to compensate for the inherent weaknesses. For self-healing flexible elastomers, conductive flexible materials can still be endowed with conductivity by scraping or printing conductive particles on the Flexible pressure and strain sensors have great potential for applications in wearable and implantable devices, soft robots, and artificial skin. The introduction of self-healing performance has made a positive contribution to the lifetime and stability of flexible sensors. At present, many self-healing flexible sensors with high sensitivity have been developed to detect the signal of organism activity. The sensitivity, reliability, and stability of self-healing flexible sensors depend...

show abstract

Self-healing flexible sensor based on metal-ligand coordination

Cited by 56 publications

References 38 publications

Bioinspired modified graphene oxide/polyurethane composites with rapid self-healing performance and excellent mechanical properties

Bioinspired modified graphene oxide/polyurethane composites with rapid self-healing performance and excellent mechanical properties

Non-Covalent Interaction on the Self-Healing of Mechanical Properties in Supramolecular Polymers

Flexible Self‐Repairing Materials for Wearable Sensing Applications: Elastomers and Hydrogels

Contact Info

Product

Resources

About