Supramolecular self-healing materials from non-covalent cross-linking host–guest interactions

Sinawang, Garry; Osaki, Motofumi; Takashima, Yoshinori; Yamaguchi, Hiroyasu; Harada, Akira

doi:10.1039/d0cc00672f

Cited by 127 publications

(65 citation statements)

References 179 publications

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“…[143][144][145][146] In this regard, the hydrophobic internal cavity in cyclodextrin (CD) has been widely used to accommodate hydrophobic binding sites for various guest molecules. [147][148][149] For example, Zhang et al [150] 2015, designed a novel type supramolecular conductive SH-PNCs by linking β-CD-modified SWCNTs (SWCNTs-β-CD) and adamantine acetate-modified polyethyleneimine oligomer (PEIÀ Ad) via host-guest interactions. The damaged composite exhibited improved mechanical and electrical properties with healing efficiency more than 90% by the aid of water.…”

Section: Host-guest Interactions In Self-healing Materialsmentioning

confidence: 99%

Design Principles of Interfacial Dynamic Bonds in Self‐Healing Materials: What are the Parameters?

Sattar

Patnaik

2020

Chemistry An Asian Journal

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Polymers and polymer nanocomposites (PNCs) are extensively used in daily life. However, the growing requirement of advanced PNCs laid persistent environmental issues due to deformation‐induced damage that once formed, does not vanish at future stages. Therefore, self‐healing materials with significantly enhanced long life and safety have been designed to epitomize the forefront of recent advances in materials chemistry and engineering. Self‐healing PNC (SH‐PNCs) materials are a class of smart composites in which nanoparticles induce interfacial reconstruction via multiple covalent and non‐covalent interactions culminating in improved mechanical strength and self‐healing capability. However, since the filler nanoparticles are independent of the reversible supramolecular network, the filler incorporation destroys the self‐healing ability but could enhance the mechanical strength. Hence, the molecular parameters controlling the alliance of robust mechanical strength with virtuous self‐healing ability is a crucial challenge. Herein, we review the latest developments that have been made in self‐healing materials and puts advancing insights into the fabrication of SH‐PNCs in which the combination of covalent bonds and non‐covalent interactions provides an optimal balance between their mechanical performance and self‐healing capability. We highlight the importance of specific entropic, enthalpic changes, polymer chain conformations and flexibility that enable the reconstruction of damaged surface and physical reshuffling of dynamic bonds at the interface of cut surfaces.

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Section: Host-guest Interactions In Self-healing Materialsmentioning

confidence: 99%

Design Principles of Interfacial Dynamic Bonds in Self‐Healing Materials: What are the Parameters?

Sattar

Patnaik

2020

Chemistry An Asian Journal

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“…Finally, also π-π stacking and host-guest interactions, typical of composite materials, can induce self-healing thanks to noncovalent labile bonds formed between the different phases. [79][80][81]…”

Section: Noncovalent Bond-based Materialsmentioning

confidence: 99%

Exploiting Self‐Healing in Lithium Batteries: Strategies for Next‐Generation Energy Storage Devices

Mezzomo

Ferrara

Brugnetti

et al. 2020

Advanced Energy Materials

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An improved lifetime can be achieved by exploiting higher intrinsic durability of the materials, or by repairing the deteriorated component and restoring its original properties. Indeed, in the last years, several attempts to improve the lifetime of widespread devices (prosthetics, batteries, solar cells, lighting devices, etc.) were reported. [4-8] However, traditional techniques (welding, gluing, patching) need in situ application of fresh healing materials, and are not applicable to many modern complex devices that require disassembly and targeted operations well beyond the expertise of the final user. Moreover, repair by specialized personnel may be impossible or unsustainable from an economic point of view. To overcome these problems, a radically new strategy that can pave the way for more durable materials is emerging: the concept of selfhealing (SH). [9] This term refers to those smart materials that can automatically restore some, or all, of their functions after having suffered of an external damage that degraded their original properties. This usually has to do with autonomous recovery of physical cracks, but may include a wider range of features prolonging the lifetime of a material/ device, which space from anticorrosion to bactericidal properties. [10,11] By tailoring an appropriate response of the system, it becomes possible to design a material that can respond to various external perturbations and accommodate their eventual disturbance. The idea at the base of this approach is usually defined as biomimetic, since it takes inspiration from nature and mimic it in solving complex technological problems. [12] During the years, many different materials or technologies, naively depicted in Figure 1a, have taken inspiration from nature (as Velcro tape which mimics tiny hooks on bur fruits, naturally ventilated facades that mime termites' mounds, hydrophobic lotus-leaf coatings, and iridescent or adhesive surfaces respectively inspired by butterflies and geckos) and self-healing is not an exception. [13-15] In fact, in nature many organisms are capable of healing damages and of restoring their functionalities: skin, bones, plants, and other living systems can sense any failure and reconstruct the injured biological part which recovers its original functionalities. [16-18] Since these features lengthen the life of natural living beings, analog mechanisms can be exploited in artificial self-healing materials to benefit the Major improvements in stability and performance of batteries are still required for a more effective diffusion in industrial key sectors such as automotive and foldable electronics. An encouraging route resides in the implementation into energy storage devices of self-healing features, which can effectively oppose the deterioration upon cycling that is typical of these devices. In order to provide a comprehensive view of the topic, this Review first summarizes the main self-healing processes that have emerged in the multifaceted field of smart materials, classifying them on the basis of t...

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“…Owing to their unique mechanical properties, dynamic nature and diverse functionality, supramolecular hydrogels have been widely studied over the past few decades. [1][2][3][4][5][6][7][8][9][10] Specifically, in the field of host-guest mediated supramolecular hydrogels there are two main approaches to prepare the final material. In the first approach, a polymer with pendent guest or host molecules is synthesised; a subsequent mixing step (with the addition of a free guest if required) then induces host-guest interactions that lead to gelation.…”

Section: Introductionmentioning

confidence: 99%

Supramolecular hydrogels prepared from fluorescent alkyl pyridinium acrylamide monomers and CB[8]

et al. 2021

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Supramolecular self-healing materials from non-covalent cross-linking host–guest interactions

Abstract: Self-healing materials constructed from host–guest interactions between macrocyclic compounds as host molecules and specific guest molecules.

Cited by 127 publications

References 179 publications

Design Principles of Interfacial Dynamic Bonds in Self‐Healing Materials: What are the Parameters?

Design Principles of Interfacial Dynamic Bonds in Self‐Healing Materials: What are the Parameters?

Exploiting Self‐Healing in Lithium Batteries: Strategies for Next‐Generation Energy Storage Devices

Supramolecular hydrogels prepared from fluorescent alkyl pyridinium acrylamide monomers and CB[8]

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